Add version label to table view cell with plugin version information.

For all plugins display label with installed version.
For local plugin if plugin is not installed display label with available version.
Display red label with error if current Xcode UDID is not listed as supported for installed and local plugins.
Update local plugin only if it is outdated (based on installed and available versions).
Use local version of Alcatraz if available instead of fetching from github.
Allow to specify local and remote packages that should be installed automatically when Alcatraz is launched.