Allow translations of applet, desklet, and extension settings via
gettext/po/mo files.
Fix copy/paste error
Added utility for applet devs to extract strings from settings-schema.json files
Fix permission on cinnamon-json-makepot.py
Fix exits
Merge pull request #2283 from mtwebster/settings-translations-v2

Allow translations of applet, desklet, and extension settings via gettext/po/mo files