Add ability to conditionally disable token shadow.

Signed-off-by: Aron Cedercrantz <aron@cedercrantz.se>
Set a default item size for tokens.

Signed-off-by: Aron Cedercrantz <aron@cedercrantz.se>
Replace GCTagList with our UICollectionView based solution.

Signed-off-by: Aron Cedercrantz <aron@cedercrantz.se>