Clean gems and assets for style switching

[#46040585]
Migrate new styles and associated images and fonts

[#46040585]
Migrate new javascripts

[#46040585]
Migrate app layout

[#46040585]
Migrate public layout (merged in app layout)

[#46040585]
Public part refactored for new design, new about page

[#46492879 #46040393]
Add js ie shim, add js to pre-processing, delete unused js

[Fixes #46491893]
Add css shim, pre-processing and removes public css

[Fixes #46040585]
Add jquery.browser for compatibility

[#46491893]
Fix action rendered when bad credentials, restore public layout
Restore public layout
Style user validation with new design

[#46040585]
[Fixes #46492929]
Move design assets to vendor folder
Clean js importations, same work started on css

[#46515157]
Separate assets pipeline for app/public.

[#46515157]
Controller/action specific scripts

[Fixes #46519127]
Fix commented js

[Fixes #46515157] Cleanup will hate to be done for css files
Merge branch 'move_to_new_design'

Conflicts:
	Gemfile.lock