…tch (#993)

So `NSApplicationDidBecomeActiveNotification` isn't blocked so command-tabbing into GitUp isn't delayed because we're refreshing all the repositories synchronously. The work will still be done on the main thread, but it will now be less likely to be noticed (especially with Stage Manager activated, the reload will probably be done by the time the Stage Manager animation is done)

…e global git config doesn't make it fail (#988)

* Create `rebaseBranch` tests and move `resolveConflictsWithResolver` method into GCLiveRepository category

* Reorganize rebase tests to include a simple rebase, one with conflict and one with multiple commits and conflicts (the last one fails with the current version)

* Add GCLiveRepository+Conflicts.m to the iOS GitUpKit target

* Fix release compilation by making GCLiveRepository+Conflicts.h public

...to fix issue where untracked files are left behind after forceCheckoutHEAD is called during a rebase

Fixes #1008

Add SUPubliceEDKey to Info plist