Change left over single quotes to double quotes
Change xbmc __init__ to follow XBMC_12PLUS
Change import cElementTree fallback ElementTree
Fix AttributeError exception on stripping actor name when None
Change genre check and strip too.
Merge branch 'fix_change_metadata' into development

* fix_change_metadata: closes gh-801
  Change genre check and strip too.
  Fix AttributeError exception on stripping actor name when None
  Change import cElementTree fallback ElementTree
  Change xbmc __init__ to follow XBMC_12PLUS
  Change left over single quotes to double quotes