Refs #4041, add default getDefaultPropertyValues() call for DataTableVisualizations, move overrideViewProperties() call in ViewDataTable to right before data is loaded from API, fix @category/@package for files moved into CoreVisualizations.
Refs #4041, removed Visualizations\Chart\* classes and moved Visualization\Chart to CoreVisualizations plugin and removed graph_width/graph_height visualization properties in favor of CSS solution.
Refs #4041, added Graph base visualization to hold visualization properties that are not specific to jqplot graphs.
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
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
refs #3763 do not close widgets&dashboards menu on click on an item within