WIP: uas extract/updater
Merge branch 'stable' into updater

* stable: (38 commits)
  v0.5.1
  fixes average download in wget, closes #20
  v0.5.0
  renames system status to system information
  improves ssp directory detection
  adds remove button to failed download
  adds failed dwnloads
  fixes wget parsing of finished files
  UI changes
  adds auto download strategy to bridge
  adds download strategy to bridge
  adds wget support to download status
  extracts curl_options into curl/wget strategies
  v0.4.1
  adds new icons
  enables PrefsObject in plex web
  prepares for release
  handles server errors with more grace, closes #15
  starts system status screen, refs #9
  use wizard payload info in MetadataObjectForURL. closes #14
  ...
WIP: uas library
starts ChannelInfo in uas
adds required files from plex-nose-example
adds latest plex_nose
moves uas_plugin_details to Contents/Tests
prunes old code
restores test_uas.py
removes old uas test
tones down output in tests
cleans up imports in plex_nose
adds tests for render_listings_response
moves WatchOptions to generic
adds tests for WatchOptions
WIP: test against L.key instead of translation
WIP: simplify tests
latest from plex-nose
WIP: hella extraction
still extracting