Renamed default "All APIs" view to "All Packages".
Eliminated magic constant (which fixes small bug where tag names are
prepended in grouped view).
- Changed combo for grouping into a radio tool bar item
- Introduced some collapse all, expand top levels tool bar items
- When switching between package presentation styles, current selection
is remember and revealed in the tree
Merge branch 'master' of https://github.com/cderoove/exapus.git