Introduces TransferModel QML component. Cleaning the database from failed syncs.
Review comment fixes
Making query directly to the transfers model instead of doing tmp table.
Removed posting of updateRequest event from the executeQuery() function.
Merge pull request #20 from zchydem/master

Introduces TransferModel QML component. Cleaning the database from failed syncs.

No more comments and things are fixed so far -> merging this now.