Merge Issues into Tracker

Here is the relevant issue: https://github.com/bountysource/frontend/issues/681

What happened?

Users manually added Issues for LibreOffice, but the real Tracker was already in our database. This results in Issues that are isolated from the real tracker.

What I did

We want to merge the isolated Issues into the real tracker, ensuring that bounties are carried over onto the real LibreOffice Tracker. Here are the steps I took:

# Find the good tracker, it is of type Bugzilla::Tracker
good_tracker = Tracker.find(207487)

issue1 = Issue.find(128387)

# Update the type from generic to Bugzilla so that we can sync comments
issue1.update_attribute(:type, 'Bugzilla::Issue')
issue1.update_attribute(:tracker_id, good_tracker.id)
issue1.remote_sync

issue2 = Issue.find(846770)

# Update the type from generic to Bugzilla so that we can sync comments
issue2.update_attribute(:type, 'Bugzilla::Issue')
issue2.update_attribute(:tracker_id, good_tracker.id)
good_tracker.remote_sync