Maintenance release "Tour de France" available now

Although it was not on the roadmap: here is a new maintenance release of the Kellermeister. Some users reported issues while trying to import backups using Dropbox and Google Drive. Additionally I was able to fix a strange issue when switching to large cellars which happened after import of large backups.

1.26.3: Maintenance release "Tour de France"

- feature:

• none

- bugfix:

• import for latest DropBox and Google Drive is working again
• app hangs after switching large cellars
• added missing check for required permissions (Android 6.0 only)

- enhancement:

• increased maximum accepted value for alcohol: 30.0 vol.%
• increased maximum accepted value for sugar: 250.0 g/l

- changed:

• none