cLock: Hide the calendar panel if there are no events to show

This fixes a regression introduced with the scrolling events list
feature

Change-Id: I949cc7ee72ecbd866ad6037454a647cab05404c9
Merge "cLock: Hide the calendar panel if there are no events to show" into cm-10.1
Merge branch 'cm-10.1' of github.com:CyanogenMod/android_packages_apps_LockClock into cm-10.1