The color names should follow the pattern @color-<colorName>-<colorModifier>
The file should follow the Zeitgeist architecture
Merge branch 'master' of github.com:piwik/piwik into tzi/morpheusLessCleanup
Merge branch 'master' of github.com:piwik/piwik into tzi/morpheusLessCleanup
PIWIK-767 changed segmentEditor so it has configurable access level
PIWIK-767 changed segmentEditor so it has configurable access level
Merge branch 'master' of https://github.com/piwik/piwik into feature/SegmentEditor
Allow to override the brand main color
Rewrite CSS import directives to avoid cross plugins override
Merge with master
PIWIK-767 cleanup after review
PIWIK-767 changes in global.ini after review
Override, hardly coded, the Morpheus theme
Use less theme variable to allow easy override
Remove useless theme variable
Remove the plugin to test the stylesheet override
refs #4373 I had to make this change to force reloading the css in case the compiled css changes without a version change

Following scenario:
There is a plugin that generates css/less files dynamically from time to time but the Plugin version does not change as there is no plugin update. Only the less file changes. When the less file changes, the plugin deletes the merged asset file as well.

The current cache buster is based on Piwik version + Plugin versions. That means, when a less file changes but no version the browser will still use the "cached CSS" as the cache buster does not change. 

Therefore I have to build a cacheBuster value based on the content of the compiled CSS file to invalidate the cached CSS file in the browser and to force the reloading. As far as I can see this change does not have any huge performance implications as it builds a hash based on the already compiled CSS file and only tries to regenerate the compiled CSS file if it does not exist.
refs #4373 somehow my previous commit did not work. need this method public for my previous change in the view
fix typo
When Piwik is installed without DB table prefix, the table 'option' becomes a Mysql reserved word.
Add quote identifier to prevent error: SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corr