Updated sidebars for dashboard and editor
Updated location and editor sidebar views
Fixed not showing page sidebar
Merge pull request #347 from adaptlearning/issue/#345

Issue/#345
More work to asset management filter form

This version is quite stable.
Added file preview on asset upload
Merge branch 'create-asset' of github.com:adaptlearning/adapt_authoring into create-asset

Conflicts:
	frontend/src/core/assetManagement/less/asset.less
	frontend/src/core/assetManagement/templates/assetPreview.hbs
	frontend/src/core/assetManagement/views/assetCollectionView.js
	frontend/src/core/assetManagement/views/assetPreviewView.js
	frontend/src/core/assetManagement/views/assetView.js
	routes/lang/en.json
Merge branch 'develop' of github.com:adaptlearning/adapt_authoring into create-asset

Conflicts:
	frontend/src/core/app/router.js