Released test build v2.0.0-beta-11

Notes:
* BUG FIX: Solved issue which causes crashlytics issues 33, 35, 37 & 47 (main cause of crashes of previous builds)
* IMPROVEMENT: Changed database location to external storage (now all Sapelli files live in 1 place)
* BUG FIX: Solved SD-card not being detected (and thus not used) on Xcover2
* MISC: resolved line-endings issues in Git repository (has no effects on compiled application)
* MISC: changed version of aFileChooser library used in Eclipse builds to match the one used in mvn builds
* BUG FIX: resolved potential/rare audio recording problem
* IMPROVEMENT: Added proper back-up logic for Project and Tranmission store classes based on RecordStore
* IMPROVEMENT: inclusion of database back-up in the Sapelli Collector ZIP back-up
* IMPROVEMENT: updated some dependency versions
* IMPROVEMENT: improvements to storage path detection, including recreation of the folder when manually deleted

Signed-off-by: Matthias Stevens <matthias.stevens@gmail.com>