Top navigation alerts are back to white

In a previous synchronization effort they were
made grey, but they are white on purpose so they
are more noticable by the user.
Merge branch 'master' of github.com:opinkerfi/adagios
improves the top menubar

providing:
* active items are displayed in white (this was broken)
* the name Adagios in the top left is now a parameter
* the displayed elements are parameters as well
better doc for topmenubar in settings
fix: left sidebar: active item
Merge branch 'master' of github.com:opinkerfi/adagios
Merge branch 'master' of github.com:opinkerfi/adagios
Merge branch 'master' of github.com:opinkerfi/adagios
improves the top menubar

providing:
* active items are displayed in white (this was broken)
* the name Adagios in the top left is now a parameter
* the displayed elements are parameters as well
better doc for topmenubar in settings
fix: left sidebar: active item
Merge branch 'feature-better-topmenu' of github.com:matthieucan/adagios into feature-better-topmenu

Conflicts:
	adagios/templates/base.html
fixes translation mistakes

closes #352
fixes bug due to other pull request: json-preferences

who taught me to merge? :)
fix url
Merge pull request #356 from matthieucan/feature-better-topmenu

Feature: better topmenu
Merge pull request #357 from matthieucan/bugfixes

fixes translation mistakes
add: tests for top/left menus
Merge branch 'master' of github.com:opinkerfi/adagios

Conflicts:
	adagios/templates/snippets/top_navigation_bar.html
add: default preferences

for users without any foo.json yet, or if the files are not available