Launcher2: add preferences entry point
default workspace fixes
Launcher2: initial preference set

added the following preferences:
  custom homescreen grid sizing
  show / hide the searchbar
  resize all widgets
  show / hide the home screen page indicator
  show / hide the dock divider

also added matricom_strings, matricom_attrs, and matricom_dimens
fix reversed category strings
Launcher2: preference to set number of homescreen and default screen
Launcher2: scrolling wallpaper
Launcher2: join apps and widgets in drawer
Launcher2: show / fade app drawer page indicator

also comment out grid size preference
Launcher2: show / hide homescreen icon labels
Launcher2: preference rewrite

redo the prefernce layout to match the rest of the tablet ui
Launcher2: Icon pack theme
This patchset allows the user to set an icon pack
for the entire launcher.

ported from Launcher3
Launcher2: add manifest activity for launcher settings

this allows the launcher preferences to be accessed directly from the main settings menu