js translation -- performance improvment (#3390)

* Chinese page

* Using react-intl-universal to improve multi language in react page

* Using react-intl-universal to improve multi language in react page

* react_intl_universal

* change

* change

* change

* change

* change

* change

* change

* merge

* multiple page in js

* merge

* merge

* merge

* merge

* Js Translations

* JS Translation

* JS Translations

* Js translation

* JS translations

* JS translations

* Js translaion

* JS en Translation

* JS Translation

* upgrade document

Fixing the damn build (#3179)

* Fixing the build

* Going deeper

[bugfix] only filterable columns should show up in FilterBox list (#3105)

* [bugfix] only filterable columns should show up in FilterBox list

* Touchups

Datasource cannot be empty (#3035)

add title description to model view (#3045)

* add title description to model view

* add missing import

Add 'show/hide totals' option to pivot table vis (#3101)

[bugfix] numeric value for date fields in table viz (#3036)

Bug was present only when using the NOT GROUPED BY option

fixes #3027

fix hive.fetch_logs (#2968)

add Zalando to the list of organizations (#3171)

docs: fixup installation examples code indentation (#3169)

[bugfix] fix bar order (#3180)

[bugfix] visualize flow error: 'Metric x is not valid' (#3181)

The metric name in the frontend doesn't match the one generated on the
backend. It turns out the explore view will default to the first
metric so specifying one isn't needed.

Fix the segment interval for pulling metadata (#3174)

The end of the interval would be on the truncated today date, which
means that you will exclude today. If your realtime ingestion job
runs shorter than a day, the metadata cannot be pulled from the
druid cluster.

Bump cryptography to 1.9 (#3065)

As 1.7.2 doesn't compile here with openssl 1.1.0f

Escaping the user's SQL in the explore view (#3186)

* Escaping the user's SQL in the explore view

When executing SQL from SQL Lab, we use a lower level API to the
database which doesn't require escaping the SQL. When going through
the explore view, the stack chain leading to the same method may need
escaping depending on how the DBAPI driver is written, and that is the
case for Presto (and perhaps other drivers).

* Using regex to avoid doubling doubles

[sqllab] improve Hive support (#3187)

* [sqllab] improve Hive support

* Fix "Transport not open" bug
* Getting progress bar to show
* Bump pyhive to 0.4.0
* Getting [Track Job] button to show

* Fix testzz

Add BigQuery engine specifications (#3193)

As contributed by @mxmzdlv on issue #945

[bugfix] fix merge conflict that broke Hive support (#3196)

Adding 'apache' to docs (#3194)

[druid] Allow custom druid postaggregators (#3146)

* [druid] Allow custom druid postaggregators

Also, fix the postaggregation for approxHistogram quantiles so it adds
the dependent field and that can show up in the graphs/tables.

In general, postAggregators add significant power, we should probably
support including custom postAggregators. Plywood has standard
postAggregators here, and a customAggregator escape hatch that allows
you to define custom postAggregators.

This commit adds a similar capability for Superset and a additional
field/fields/fieldName breakdown of the typical naming for dependent
aggregations, which should make it significantly easier to develop
approxHistogram and custom postAggregation-required dashboards.

* [druid] Minor style cleanup in tests file.

* [druid] Apply code review suggestions

* break out CustomPostAggregator into separate class. This just cleans
  up the creation of the postaggregator a little bit.
* minor style issues.
* move the function around so the git diff is more readable

add combine config for metrics in pivot table (#3086)

* add combine config for metrics in pivot table

* change method to stack/unstack

* update backendSync

Autofocus search input in VizTypeControl modal onEnter (#2929)

Speed up JS build time (#3203)

Also bumping a few related libs

JS Translation

JS translations

js translation

fix issue 3204 (#3205)

[bugfix] capture Hive job_id pre-url transformation (#3213)

js translation

fix issue 3204 (#3205)

[bugfix] capture Hive job_id pre-url transformation (#3213)

[docs] update url in CONTRIBUTING.md (#3212)

[sqllab/cosmetics] add margin-top for labels in query history (#3222)

[explore] nvd3 sort values in rich tooltip (#3197)

[sqllab] fix UI shows 'The query returned no results' momentarily (#3214)

this is visible when running async queries between the fetching and
success state as the rows are getting cached in the component

[explore] DatasourceControl to pick datasource in modal (#3210)

* [explore] DatasourceControl to pick datasource in modal

Makes it easier to change datasource, also makes it such that the list
of all datasources doesn't need to be loaded upfront.

* Adding more metadata

* Js translation

* js tran

* js trans

* js trans

* js tran

* js trans

* js trans

* js tran

* js translation

* js trans

* js translation

* try load language pack async

* Backend translations things

* create language pack inside common data

* performance improvement for js i18n.

- js bundle should not contain localized content
- we populate translation content from server-side, in boostrap.common.language_pack
- in client-side, use promise to wrap around translation content. text will be translated after translation content arrived/parsed.
- fix linting

* fix Timer unit test

* 1. add global hook for all tests, to make translation pack avaialble before each test starts.
2. fix unit test for Timer component
3. remove noused method get_locale, and modules
4. fix page reload after user change page language

* parse and build i18n dictionary as a module

* fix sync-backend task, which should run without DOM

CONTRIBUTING.md

@@ -331,6 +331,8 @@ key is to instrument the strings that need translation using
 a module, all you have to do is to `_("Wrap your strings")` using the
 underscore `_` "function".
 
+We use `import {t, tn, TCT} from locales;` in js, JSX file, locales is in `./superset/assets/javascripts/` directory.
+
 To enable changing language in your environment, you can simply add the
 `LANGUAGES` parameter to your `superset_config.py`. Having more than one
 options here will add a language selection dropdown on the right side of the
@@ -342,6 +344,10 @@ navigation bar.
         'zh': {'flag': 'cn', 'name': 'Chinese'},
     }
 
+We need to extract the string to be translated, run the following command:
+
+    pybabel extract -F ./babel/babel.cfg -k _ -k __ -k t -k tn -k tct -o ./babel/messages.pot .
+
 As per the [Flask AppBuilder documentation] about translation, to create a
 new language dictionary, run the following command:
 
@@ -358,6 +364,14 @@ to take effect, they need to be compiled using this command:
 
     fabmanager babel-compile --target superset/translations/
 
+In the case of JS translation, we need to convert the PO file into a JSON file, and we need the global download of the npm package po2json.
+We need to be compiled using this command:
+
+    npm install po2json -g
+
+Execute this command to convert the en PO file into a json file:
+
+    po2json -d superset -f jed1.x superset/translations/en/LC_MESSAGES/messages.po superset/translations/en/LC_MESSAGES/messages.json
 
 ## Adding new datasources
 

babel/babel.cfg

@@ -1,4 +1,8 @@
 [ignore: superset/assets/node_modules/**]
 [python: superset/**.py]
 [jinja2: superset/**/templates/**.html]
+[javascript: superset/assets/javascripts/**.js]
+[javascript: superset/assets/javascripts/**.jsx]
+[javascript: superset/assets/visualizations/**.js]
+[javascript: superset/assets/visualizations/**.jsx]
 encoding = utf-8