Don't create idmap if app doesn't have resources.arsc

Some apps do not have a restable but some legacy themes
try to theme these apps anyways. In this case we skip
the idmap creation process.

Change-Id: I8bc60984299791733d4fe8c9bbcaa75eca6d736b
Install themes and icon packs for secondary users.

Change-Id: I48ae6835223510a433642fced5b96b6c3954baf6
Remove DEFAULT_THEME_APPLIED_ON_FIRST_BOOT

doApplyDefaultTheme should be able to apply the default theme, if
one exists, whenever applyDefaultTheme() is called.

Change-Id: Ia50b4089d122855a4ddde91a02eef33ed3f9eaf4

Conflicts:
	core/java/android/provider/Settings.java
Add status bar and navigation bar to ThemesContract

Change-Id: I8048c735d7bbbfdb86ee5923b95bece6b4252bf7
Add previews to the themes contract.

Change-Id: I607a6eda1c63a701516d2bc78ca6b705841fbdf7