Handle querying missing file for language
Updated Galician translations
Some PEP8 of vcview
Don't uncache the VC inventory

The memory savings here are very very minor anyway, and it was almost
always a loss, as we often then re-cache soon thereafter. Most
importantly, this exposed a bug in our SVN usage (or rather in the API
itself) where the first re-cache was done with a subdirectory and we
had a bad cache for the rest of the tree.
Allow customization of current chunk highlight colour (bgo#701574)
Updated Greek translation