merge branches

Fix tour tests
Add test for bing search (images)
Add UI test for video and pdf bing search
Fix bing image search test
Remove obsolete html/css.
Add client-side Skydrive support.

Details:
1. Add Skydrive mediatype in content item authoring form.
2. Add CanvasSkydriveItem object in virtualCanvas.
Add UI mockup for SkyDrive mediapicker.
Hint messages for Create Timeline/Exhibit scenarios.
Finalizing merge
Fixing issue with tours authoring window
Merge branch 'skydrive' of git://github.com/alex-zen/ChronoZoom into alex-zen-skydrive
Merge pull request #954 from mkalygin/skydrive-mediapicker

Add UI mockup for SkyDrive mediapicker.
Bugfix for #804: Ticks on axis and markers are now showing convenient time.
Merge pull request #955 from alterm4nn/fix804

Bugfix for #804: Ticks on axis and markers are now showing convenient time
Add Skydrive mediapicker feature activation.
Implement SkyDrive mediapicker.
Merge branch 'BingSearchTests' of https://github.com/v-avdeev/ChronoZoom
Merge pull request #960 from a-chumagin/master

Bing search tests
improve bing search tests
[Hotfix] Fix regimes are not displayed in root collection