Fix throttle decorator function...

... so that it uses args from last call before timer triggers rather
than args when timer was set.
Fix PR #225 when translate language is not en...

... and there are no correct locales in the artist sort-name node.
Merge pull request #252 from Sophist-UK/fix_PR_225_when_locale_not_en

Fix PR #225 when translate language is not en...
Move sip import to the picard_test command
Remove partial (bitmap comment)
Merge pull request #245 from Sophist-UK/sophist_fix_throttle_decorator

Fix throttle decorator function so that it uses args from last call before timer triggers rather than args when timer was set.