Eleven: materialize

-Material Ui theme
-New launcher icon
-Better tabs

Change-Id: I712ac2eb5256841cf89d198eed775ce8afe9d09c
Make buttons more touch friendly.

Do this by replacing margins and empty space around buttons by padding.
Doing this also makes the ripple touch feedback look better.

Change-Id: I7f2e933b9f7b481c9456f56860483c2e5e96b67b