Uses icon font for column selection
Uses icon font for column order selection
Fixes code style
Makes menu more accessible
Cleans up main menu initialization

Triggering the expandation of the selected menu moved from base
layout to application.js.
Removed call to not ..

existing expand_current_menu method

- makes 'you are member' indicator readable by sreensreaders on
  projects#index
Fixed 500 passing the note parameter on work package create
Fixes search for selected menu item
Fixed non-functional category delete
Added changelog for 4186
Merge pull request #938 from opf/fix/500_on_api_work_package_create
Adds changelog entry
Adds specs
Merge pull request #943 from opf/fix/500_on_category_destroy_1390
Adds changelog entry
Merge pull request #934 from opf/fix/link_comprehensibility_4123

[FIX] Link comprehensibility 4123
Update CHANGELOG.md
Fixes show more properties link on wp#show

- moved link after legend
- uses icon from icon font instead of text
- moved inline javascript to application.js
Merge pull request #948 from opf/fix/more_wp_properties_link_wp_show
Adds changelog entry