Implement AccountManager.removeAccount
Allow specifying manifest, res, and assets via system property.

This is needed when other tooling bootstraps the test running.
Add option for startActivity to throw ActivityNotFoundException when Activity is not in the PackageManager.
Add Activities in the AppManifest to the application's PackageManager in default test lifecycle
Add static helper to Robolectric for configuring Activity checking
Support queryWithFactory in ShadowSQLiteDatabase
Only load libraries from project.properties if they exist
Merge pull request #718 from coreydowning/ignore-not-found-libs

Only load libraries from project.properties if they exist
Make sure `Animation.hasEnded()` is true after `ShadowAnimation.invokeEnd()` is called
Make `Animation.hasEnded()` true for `Animation.cancel()`
Merge pull request #720 from coreydowning/animation-ended

Fix `Animation.hasEnded()` so it is true after `invokeEnd()`/`cancel()`
Implement get/set text align for ShadowPaint. Fixes #383
Merge pull request #721 from coreydowning/paint-text-align

Implement get/set text align for ShadowPaint
Fix PopupWindow.isShowing()
Merge pull request #723 from cyrret/master

Fix PopupWindow.isShowing()
Merge pull request #604 from stefanodacchille/shadow_account_manager_improvements

Add implementation for AccountManager.removeAccount() method
Better testing of AccountManager#removeAccount
Merge pull request #726 from coreydowning/account-manager-test-cleanup

Better testing of AccountManager#removeAccount
Merge pull request #703 from coreydowning/activity-not-found

Add optional check for Activity presence on `startActivity`
Remove a large subset of shadow classes and methods.