Merge pull request #7808 from fabi1cazenave/nitz-detect

Bug 827764: [Date/Time] hide "Set automatically" when NITZ is not available, r=alive
Merge pull request #7730 from lodr/bug-830276-disable-done-button

Bug 830276 - Disable done button when PREPAID and limit enabled but empty
Cause a+ and r+
Merge pull request #7804 from michalbe/obtain-source-code

Bug 832959 - "Obtaining Source Code" entry added to "Legal Information" ...
Merge pull request #7784 from lodr/bug-833780-no-topup-error

Bug 833780 - Adding a desktop notification when receiving a top up error
Cause tef+ and r+
Merge pull request #7830 from lightsofapollo/calendar-dont-process-empty-calendars

Bug 835285 - Handle case where server has no calendar data r=kgrandon