CMFM: Set theme before setContentView

This allow to proper set the theme of system views

Change-Id: Ib3d2baf884a1edc299f99aeff0d884d9d4352df1
JIRA: CYAN-2850
Issue: https://jira.cyanogenmod.org/browse/CYAN-2850
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>