Merge remote-tracking branch 'original/master'
Merge remote-tracking branch 'processing/master'
removed arrow-symbols from translations
fixed encoding
added sketchbook frame translation
added sketchbook tree translation
added tooltips translations
added new file or tab handling translations
added basic prompt messages
refactored sketchbook frame path, improved properties
fixed okay->ok key
Add thread names for easier debugging and profiling
Merge pull request #2725 from voidplus/i18n_update

I18n
Merge pull request #2729 from federicobond/thread-names

Add thread names for easier debugging and profiling
Add language hooks for UpdateCheck and ColorChooser