added onClick-behaviour to sightings list items
worked around failing db import on emulated machine, thus exposing a db
import bug and hopefully fixed it
* minor improvement to session list item display readability
* adding a new button to main activity for changing system time/date
(not yet functional)
* removed some string duplications
* added "try pairing" button to sighting list item onClick
commentation
merging takes getting used to
Merge branch 'master' of https://github.com/st-pa/a09-blauzahn.git