Don't start keyguard in an attempt to exit it.

exitKeyguardSecurely() will open the keyguard if it's currently disabled
by an app. As this is unwanted here (the user has either already
bypassed the keyguard or the keyguard isn't secure; otherwise he
couldn't click on a notification entry) and as the lockscreen already is
dismissed a few lines above, don't call exitKeyguardSecurely here.

Change-Id: I5582da350d8826e42f9edcd56845a59965865c8b
JIRA:CYAN-99
Don't let apps disable the SIM PIN entry screen.

As the user (who controls the app behaviour after all) likely doesn't
see the PIN screen as a lock screen (he likely wants telephony) and the
PIN screen is not shown on a timer-driven basis, it should be treated
specially.

Change-Id: I3572a80d4a515d72e3aa4a6e933e980fa4516c2b
Fixed the problem ime invisible status despite being the icon that appears in the statusbar.

[Reproduce the Path]
Precondition : Set "Auto-rotate screen" option to ENABLE

Calendar App lunch -> Rotate device to "Landscape" -> Touch "+" button(Add new Schedule)
-> Check the ime icons of the Status bar

Ime invisible status despite being the icon that appears in the statusbar.
Displays an icon in the status bar when the ime was actually visible state is modified to check.

Change-Id: If103ab909c5bfa6391eb51a696fb8b8f0b18808c