[Android] Add missing DetailPagerAdapter.java

Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>
[Android] Spice up event fragment layout

Add a separate title and subtitle view containing the event name and
location.

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

Make color tags a bit narrower.

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

Extend shadow below event list if list is shorter than the screen height
(keeps the illusion of a page separation across the entire screen).

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