KOTA-120: Added check for env parameter
KOTA-120: Removed a debug println
KOTA-120: Set build environment as rpm release
Added environment parameter
Set rpm package architecture to x86_64
Updated logging configuration
Extracted SQL statements to external files
Improved transaction handling.
Changed the scope of jDBI mappers from method to class
Added a dummy version when git client of GIT_COMMIT environment variable
are not around.
Fixed teaching language name resolving and improved corrensponding test.