Phone: PIN2 shouldn't be seen when make passwords invisible

Since the attribute android:imeOptions is set to actionDone,
and as the result after rotating the phone, the EditText become
full screen, and the content of EditText can be seen.

Change the attribute android:imeOptions to flagNoFullscreen.

CRs-Fixed: 426558

Change-Id: Id1a7106c32d46a89e1332114143cad470050dd3c
Phone: It should stay at Sip account details interface after unlock phone

When the SipEditor was paused, it auto save the editing Sip account
and finish the Sip account details interface.

Don't finish the Sip account details interface when the SipEditor
paused, then make sure it can stay at Sip account details interface
after unlock phone.

CRs-Fixed: 424610

Change-Id: I2f6c9eb85ed57531338fd88ffec7de2c8d2f6a21
Phone: Prompt port number invalid when the port number length too long

The number format exception occurs if the length of the port
number is too long, but it does not catch this exception,
so the phone force closed.

Add the handle of number format exception, then show a alert dialog.

CRs-Fixed: 412220

Change-Id: I3c37e4d19ce6f50bb4820716c8d7533e43c7cfc9