Update moment from 2.18.1 to 2.19.0 in addons/knobs

[dependencies]

moment has been updated to 2.19.0 in addons/knobs by dependencies.io

2.19.0

• Release Oct 10, 2017

Fix React Native 0.49+ crash

• #4213 [critical] Rename dynamic
  require to avoid React Native crash
• #4214 [fixup] Move require
  rename inside try/catch, fixes
  #4213

Features

• #3735 [feature] Ignore NaN values in setters
• #4106 [fixup] Drop isNumeric utility fn, fixes #3735
• #4080 [feature] Implement a clone method for durations, fixes #4078
• #4215 [misc] TS: Add duration.clone(), for #4080

Packaging

• #4003 [pkg] bower: Remove tests from package
• #3904 [pkg] jsnext:main -> module in package.json
• #4060 [pkg] Account for new rollup interface

Bugfixes, new locales, locale fixes etc...

[codecov]

Codecov Report

Merging #2013 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2013   +/-   ##
=======================================
  Coverage   21.34%   21.34%           
=======================================
  Files         262      262           
  Lines        5767     5767           
  Branches      692      694    +2     
=======================================
  Hits         1231     1231           
- Misses       3992     3995    +3     
+ Partials      544      541    -3

Impacted Files	Coverage Δ
addons/knobs/src/components/PropForm.js	8.51% <0%> (ø)	⬆️
app/react-native/src/preview/story_kind.js	0% <0%> (ø)	⬆️
lib/ui/src/modules/ui/components/menu_item.js	19.14% <0%> (ø)	⬆️
...s/left_panel/stories_tree/tree_decorators_utils.js	45.23% <0%> (ø)	⬆️
...es__/update-addon-info/update-addon-info.output.js	0% <0%> (ø)	⬆️
addons/knobs/src/KnobManager.js	32% <0%> (ø)	⬆️
addons/events/src/components/Event.js	0% <0%> (ø)	⬆️
...rc/modules/ui/components/left_panel/text_filter.js	30.98% <0%> (ø)	⬆️
app/react-native/src/bin/storybook-build.js	0% <0%> (ø)	⬆️
lib/ui/src/modules/ui/configs/init_panels.js	25% <0%> (ø)	⬆️
... and 13 more

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