Merge pull request #848 from Bars107/sherpafy

First implementation of dialog
Update SherpafyCustomization.java
Translated using Weblate (Catalan)

Currently translated at 100.0% (1498 of 1498 strings)
Refactoret states
Translated using Weblate (Belarusian)

Currently translated at 100.0% (1498 of 1498 strings)
Fixed null reference on backPressed in Sherpafy
Translated using Weblate (Catalan)

Currently translated at 100.0% (1498 of 1498 strings)
Translated using Weblate (Catalan)

Currently translated at 100.0% (1498 of 1498 strings)
Translated using Weblate (Catalan)

Currently translated at 100.0% (1498 of 1498 strings)
Added back button on stage favorite
Merge pull request #849 from Bars107/sherpafyrefactor

Refactored states. Fixed null pointer on back pressed.
Translated using Weblate (Catalan)

Currently translated at 100.0% (1498 of 1498 strings)
Merge remote-tracking branch 'origin/master'
Enhance sherpafy
Merge branch 'master' of ssh://github.com/osmandapp/Osmand
Translated using Weblate (Dutch)

Currently translated at 100.0% (1498 of 1498 strings)
Enhance sherpafy
Refactor favorites
Translated using Weblate (Italian)

Currently translated at 100.0% (1498 of 1498 strings)
Complete stage fragment