Long-press menus for trackables

Enables copy&share and translate for all suitable fields for trackables.
Merge branch 'morecopy' of git://github.com/YraFyra/c-geo-opensource into upstream
refactoring: do not duplicate code
refactoring: do not duplicate code
refactoring: do not duplicate code
Fix #3580, Logging with oc not possible without entering user credentials for gc

- removed no longer sensible check for gc credentials.
Merge branch 'release' into upstream
Fixes #3626, Can not authorize to oc.pl

- fixed my stupid bug sending the request twice :(