DeskBar: use the prepared transparent icon when necessary

In the odd case where there is no icon for an app, and the generic
3 boxes icon is also unavailable/removed, Deskbar now properly draws
the transparent icon that was prepared, but not used (and leaked).
Move Alex Smith to active maintainers list.
Update translations from Pootle
HaikuDepot: Disallow second split (package info) to collapse
HaikuDepot: Classes to interface with the Package Kit

 * Non functional
 * Basically allows to retrieve applicable actions for
   a given package.
HaikuDepot: Include star icon in resources
HaikuDepot: Include PackageManager.cpp in build
HaikuDepot: Class and method to retrieve a user rating summary
HaikuDepot: More work on package info view

 * Display rating via RatingView and additional BStringView
   decoration
 * Display radio buttons to switch between About, Ratings and
   Changelog pages. (Will be replaced again...)
 * Implement preliminary UserRatingsView showing all user
   ratings (currently in a single BTextView, will be much
   more detailed later on).
 * Implement ChangelogView, simply showing the dummy changelogs
   in a BTextView.
 * Layout tweaks
HaikuDepot: Switched back to actual BTabView

 * Instead of showing all package actions along the bottom
   of the window, only the applicable actions are shown, but
   besides the package title.
 * The radio buttons are gone, instead an actual BTabView is
   used, but now in a more pretty way.
 * The package info content stretches to the window border
   which will make showing a vertical scroll bar look better.
Debugger: Move CLI commands into their own subdir.
HaikuDepot: Added WonderBrush and Paladin screenshots in resources
HaikuDepot: Added ability to load archived BBitmaps resourced.

 * SharedBitmap should probably be moved into its own file.
 * Untested as of yet.
HaikuDepot: Added ability to store screenshots in PackageInfo.
HaikuDepot: Allow to force other size on BitmapView
BControlLook: The spacing values need to be rounded...

 ... or they will cause all sorts of graphics glitches and layout
 problems.
HaikuDepot: Scrollbars for content, document window look

 * All text views that potentially need scrolling are now
   embedded into a CustomScrollView. That one controls a
   vertical BScrollBar only and has B_NO_BORDER frame. Since
   the regular BScrollView doesn't do some adjustments in
   this setup, the CustomScrollView takes care of moving the
   BScrollBar such that the B_DOCUMENT_WINDOW_LOOK resize
   handle does not obscure the bottom arrow button.
HaikuDepot: Keep aspect ratio of Bitmap in BitmapView
HaikuDepot: Add screenshots from resources to dummy package infos.
HaikuDepot: Display the first screenhot in the package contents area.

 * Disabled BitmapView::GetHeightForWidth() to keep aspect, it seems
   broken in the layout system, the view gets layouted completely
   elsewhere. Mabye due to the layout hierarchy being optimized?
 * Instead layout the bitmap with correct aspect in the given space,
   honor LayoutAlignment() for this.