t0lte: Various tunings

 * Tune haptics duration, default is far too long
 * Five rows of icons for Trebuchet

Change-Id: I22e0a928a3bf32de6aebeafc2822bb6f08dada02
t0lte: Allow extension by carrier-specific configurations

Change-Id: Icf1cf20fda21579950ede21da7a0e455046087c7