Crespo: Update Search button for kitkat
It's now ASSIST, not SEARCH

Change-Id: Iaf302fc6e5ba2ea152c1e45bd94bc36c053f534a
Crespo: disable low RAM

low_ram config is not compatible with kitkat

Change-Id: I2b4277a01e79832906fdb279922af9bd29ee80c9
Crespo: improve touchscreen responsiveness

credits to mze1

Change-Id: I25767eac73f7f9bfdcde8796baae288747ea436b