SDK Updater: UI polish

SDK Updater: UI polish

Fixes the following issues:
- Updater says it didnd't install addon and then install it
  (cause: UpdaterData was looking for an ArchiveInfo in a map of Archive)
- Added a label explaining the [*] in the dependency list.
- Added the originating site to the long description in the package chooser.
- Display downloading/installing comments in the result window.
- Fixed app name in dialog when tools are updated.

Change-Id: I075d2eaeb357f33671f7e9e70a906ca48000908d