[Android] Remove unused imports

Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>
[Android] Fix duplicated menu items

Remove detail fragment from detail activity layout to prevent inflation
and creation of a duplicated share action in the menu. Remove all
workarounds previously added to prevent duplication.

Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>
[Android] Adjust tablet layout

Change detail fragment layout for use in tablets.

Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>
[Android] Add missing file

Add missing res/anim/rotation.xml.

Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>