App: Storage access framework

[devemux86]

@rumbrummer

I can not open .kurviger files and GPX files from Total Commander any more

App: Storage access framework

File managers should return the proper file content according to Android guidelines. Total Commander on older Android may need permission (works on newer Android). You can use Google Files app, which should work with any location (even SD card).

@rumbrummer

The export filename is not kept any more.

Kurviger 1.14.12 (Beta) was released.