video preview.

 * modified:   packages/tunes-theme-touch/sass/src/Component.scss
 * modified:   tunes/app/view/main/Main.js
 * modified:   tunes/app/view/main/MainController.js
 * modified:   tunes/app/view/main/MainModel.js
Merge branch 'release/video-preview'
country selection.

 * modified:   packages/tunes-theme-touch/sass/src/Component.scss
 * modified:   tunes/.sencha/app/codegen.json
 * new file:   tunes/app/model/Country.js
 * modified:   tunes/app/model/Tune.js
 * modified:   tunes/app/view/main/Main.js
 * modified:   tunes/app/view/main/MainController.js
 * modified:   tunes/app/view/main/MainModel.js
 * modified:   tunes/bootstrap.json
Merge branch 'release/country-selection'