Fix path bug in manual pot file discovery.
Implement google authentication.
Put all google communication into "Spreadsheet" class.
Add default spreadsheet to development cfg.
Fix spreadsheet argument in recipe.
Pass spreadsheet url to the commands.
Optimize google upload performance, add progress logging.
Get message dicts from catalog.
0e9091a * Optimize google upload performance, add progress logging.
9e329c6 * Fix spreadsheet argument in recipe.
Implement upload command.
Implement download command.
Cleanup po files: remove language and domain headers.
Merge branch 'jone-google-spreadsheet'
Update readme.