NextGIS Mobile v2.5

1. Instant layer push to nextgis.com
2. New nextgis.com resource selecting full screen
   • Add empty group creation and ascending sort
3. Update nextgis.com login screen
4. Reduce map redraw count
5. Add edit geometry by tap
6. Add "zoom to extent" for raster layers from nextgis.com
7. Update layer settings screen
   • Add sync tab for nextgis.com layers
   • Add sync directions
   • Add delete raster cache button
   • Add delete all features button
   • Add zoom scales in km
8. Links in attributes are clickable
9. Improve info messages and dialogs
10. Add support screen
11. Bugfixing