release-2020-09-10-15.30/+0200

Changelog

New features

• "Edit grid -> More -> Translate Grid" allows to add/edit translations of grids in any language
• New grid element action "Change app language" allows to change application and grid language by selecting a grid element
• Text-To-Speech uses ResponsiveVoice.org as fallback

Internal improvements

• Now using ServiceWorker instead of deprecated AppCache, fixes #16
• Translations of labels are now stored in grid internal data structure. This makes it possible to translate grids on-the-fly

Closes issues

• Using Service Worker: #16
• App update now happens in the background and therefore no percentage has to be shown: #19
• Speech output should now work on RP4 by using ResponsiveVoice fallback: #26