[ABS] Fix of: TizenRefApp-8771 Saving image to Gear fails

- Added acuireMediaDbConnection/acuireMediaDbConnection functions;
- Added copyFile() temp function.

Reference: submit/tizen_4.0/20170811.094300
Commit id: 6340a6c69fb31fbc6dbed97dec21961a8ae53622
Requested by: m.wereski@partner.samsung.com
SDK rootstrap version: 20170809_1