remove shake gesture
remove internal memory preference
remove broadcast messages preference
remove kanji info feature
remove async mode preference
remove splash screen
remove fix orientation preference
remove scrollbar fading preference
remove text selection preference (always enabled)
Add "None" to dictionary entry as substitute for disabling text selection setting
Remove redundant custom dictionary setting
Only initialize lookup class when reviewer is first started
remove reset messages, dialogs, all preferences
Merge branch 'develop' of https://github.com/ankidroid/Anki-Android into preferenceCleanup

Conflicts:
	src/com/ichi2/anki/AbstractFlashcardViewer.java
	src/com/ichi2/anki/DeckPicker.java
Merge pull request #331 from timrae/preferenceCleanup

Remove redundant preferences part 1