#GT-897: added request for changing db, to which server is connected
added demo app. crashing on startup during LoginQuery creation
fixed bug with fail at startup
added functionality
fixed http_requests and added new functionality to the demoApp
fixed minor bugs + ui improved
fixed bug in DefaultQuery
added check for response emptyness
uncommited change
added tag sorting in filter and loadTags
#GT-913: added tag_number parameter
#GT-914: added logic for many DB support
#GT-914: tested, added ability to pass "default" as db_name to restore default db
#GT-899: added tests for setDb
#GT-912: added unique constraint for channel table
#GT-919: fixed case sensivitines in many sql requests
#GT-935: fixed bug with special symbols
added test for GT-935
test for GT-935 was made more general
#GT-940: added build depends