FIX: do not display event too far in the future

This patch add a filter to drop events after the "lookahead" value (in local
time). Add a comment line to clarify why we have to fetch event farther in the
futur for "all day" events.

Change-Id: I8e2282768962682ecbf9f04b242297e67d3f103f
cLock: Add mdpi support

Thanks to MardonHH (From github.com/MardonHH)

Change-Id: I2fc4d96b94209f74e3c33f743002a56895b8dc5f
Merge remote-tracking branch 'upstream/cm-10.1' into cm-10.1