fixed some html markup errors
added missing ';' / use double quotes for attribute values instead of single quotes
small improvements
fixed usage of void function results
removed unused method
fixed some doc blocks
small jquery selector improvements
fixed namespaces
Fixing code style
Fix the fix :( Don't look at me..
replaced presentational html tags
small code improvement
Remove inline color to use a variable
Corrent name of Osttirol (was Salzburg before)

fixed #3967
[ci skip]
Merge branch 'master' of https://github.com/piwik/piwik
Fix iframe width/height

fixes #4022
[ci skip]
refs #4022
Rename admin menu classes
Uniformize menu class name between dashboard & administration
refs #3763 do not close widgets&dashboards menu on click on an item within