Apply transparency on search color

[svaabs]

With this changes we make sure that the transparency of the default style is applied to new colors set by the colorpicker.

[svaabs]

@sbrunner I scrolled through the travis log but I am not sure where to find the relevant error. Can you help me?

[sbrunner]

@svaabs You should be able to restart the build...

[svaabs]

@sbrunner I am afraid I am not authorized to restart the build or at least I do not know how to.

[sbrunner]

Me neither, Then amend the last commit without any modification, and push it again...

[svaabs]

As discussed with @pfirpfel I will add some more information to reproduce the changes.

Steps:

• Configure the search component to use the color chooser: https://github.com/camptocamp/baselstadt_mapbs/blob/23011a760e0e59171ac12e70047523b5867d76db/geoportal/mapbs_geoportal/static-ngeo/js/apps/desktop.html.ejs#L27
• Add some custom search style with opacity:
  https://github.com/camptocamp/baselstadt_mapbs/blob/23011a760e0e59171ac12e70047523b5867d76db/geoportal/mapbs_geoportal/static-ngeo/js/apps/desktop.html.ejs#L30 and https://github.com/camptocamp/baselstadt_mapbs/blob/23011a760e0e59171ac12e70047523b5867d76db/geoportal/mapbs_geoportal/static-ngeo/js/apps/Controllerdesktop.js#L475
• Type a search request to get a polygon response
• Select search result
• The default search style is applied (blue outline with some transparency, full transparent fill style)
• Use the color picker to change the search result's color

Result (current ngeo solution):

• New color is applied
• No transparency on the outline
• Transparency of the fill style set to 0.5

Expected result (with this pull request):

• New color is applied
• Outline uses the transparency of the default style (some transparency)
• Fill style uses the transparency of the default style (full transparency)

[sbrunner]

@fredj does it look good to you?

[pfirpfel]

I just tested the change locally. As far as I can see, the default geomapfish behaviour does not visually change.

The change looks good in my opinion.

[fredj]

looks good to me too