LockCLock: Remove calendar icon

Remove the calendar icon from the panel.
Patch 4: Removed all references to hiding the icon
JIRA: CYAN-1735

Change-Id: I22fee93d720f407caf611b1f6d04ea05742e1647
LockClock: added "Today" timeframe to calendar event lookahead

Adds ability for lockclock to display only those events happening
before midnight each individual day.

Change-Id: Ifd9c74f0545a0fd0b2c0e7416ba8e23d5735e590
Patch 2: Rebased after 47249 commit
JIRA: CYAN-1868
LockClock: ES translations

- Calendar icon
- Today timeframe

Change-Id: Ica866d6bd0485d93e053ef1c38c2a3df0914979f
LockClock: Fix lookahead event display

Found out today that events starting at 00:00 the next day were
showing in the calendar when a lookahead time of 'Today' was selected.
The closer the milliseconds were set to 999 (990 for ex.) caused the
widget to attempt to fetch the 00:00 event continuously. A value of
500 provides a safe buffer to prevent continuous event fetching.

Patch 1: Initial patch

Change-Id: I6a0d0795e8970f1491ef198558384db65d639d1e
Merge "LockClock: ES translations" into cm-10.2