URBNG-490 [Android][Database] Multiple tasks insert tranasaction

Ready
"synchronized" add
Merged upstream
Ready
synchronized
Ready
comment - null to false
Merge pull request #136 from herbatnik/dbtins

URBNG-490 [Android][Database] Multiple tasks insert tranasaction
Merge pull request #142 from herbatnik/dbpgins

URBNG-491 [Android][Database] Multiple player tasks specific insert transaction
Test "fix"
Merge pull request #143 from herbatnik/dbptins

URBNG-492 [Android][Database] Multiple player games specific insert tranasaction
Merge branch 'test' into new
Merge pull request #144 from herbatnik/test

URBNG-507 [Android] Some unit tests fails
Merge remote-tracking branch 'upstream/android' into android