Use normal but semi-transparent color instead of 'disabled' color for
counts drawing.
Do not leave empty space for icon when selected item doesn't have one.
Use null pixmaps/icons instead of non-null blank ones.
Implement our own sizeHint and minimumSizeHint to make sure both combos
have the same height.
Make activity combo width fixed, tracker combo width to fit its content
and line edit to occupy the rest.
Add 'Search...' placeholder to line edit.
1. add the option the code to be used under GPLv2 or GPLv3; previously only GPLv2 was allowed
2. add the "proxy option" as described in GPLv3 so we can add future licenses without having to bulk-edit everything again :)
3. remove the awkward "exception for MIT code in Mac client" clause; it was unnecessary and confusing.