dont panic! return error back
Resolve some todos in server/model: * Move persistent queue into its own package * Create Types: StatusValue, SCMKind, RepoVisibly * Rename struct Repo fields: SCMKind, IsSCMPrivate
close #234 * Migrate store * Migrate tests * Rewrite migrations * Init fresh DB in on step * Rm old stuff (meddler, sql files, dead code, ...)