Problem

Much of the GitHub syncing can be reorganized as follows:

• CommentSyncer and TaskSyncer need to move out of Event; structure could be like:
  • sync/issue/issue.ex Sync.Issue (main entry point for handling the syncing of an issue)
  • sync/issue/body_parser.ex Sync.Issue.BodyParser (parses issue body)
  • sync/issue/task/task.ex Sync.Issue.Task (syncs the issue to a Task)
  • sync/issue/task/changeset.ex Sync.Issue.Task.Changeset (deals with changesets)
  • sync/issue/github_issue/github_issue.ex Sync.Issue.GithubIssue (syncs the issue to a GithubIssue)
  • etc.
• ChangesetBuilders
  • need to move out event to wherever syncing goes
  • map can be removed
  • naming needs to be rethought to reflect that these are changesets for Code Corps models (Task, Comment, etc)
• GithubRepo installation events need to have common/repo_finder (renamed to repo_linker)
• CommentDeleter needs to move out of Event
• CommentDeleter needs to delete GithubComment
• ChangesetBuilders need create_ and update_ functions made public, build_ fns removed, unit tests added
• Replace instances of find_or_init and commit with insert_or_update and find