fixes #3354 - Position not saved on logbook screen
Merge remote-tracking branch 'KiwiStone/issue-3354'
refactor: generalize state storing for listview based viewpager pages
new: have send2cgeo in usefull apps
fixes #3431: avoid navigation selection for single option
Fixes #3450, Opencaching.us: Api update to rev 901

- adapted okapi level of opencaching.us to current after site update
refactoring: findbugs issues
findbugs: more cleanup

* include findbugs suppression annotations
* have findbugs settings stored as shared settings
fix findbugs exclusion file
extremcaching connector initial version
Merge branch 'master' of https://github.com/cgeo/cgeo
extremcaching connector license text
extremcaching connector added logging capabillity