Show notes list items and note title and content as cards

	modified:   src/main/java/net/jarosinski/ned/activities/TitlesFragment.java
	new file:   src/main/res/drawable/card.xml
	new file:   src/main/res/drawable/card_active.xml
	new file:   src/main/res/drawable/title_item_selector.xml
	modified:   src/main/res/layout/note_view.xml
	new file:   src/main/res/layout/notes_list.xml
	modified:   src/main/res/layout/title_item.xml