Fix photos view
Create new asset from user dashboard

* Implemented creation of buckets and rivers from the
content view in the user dashboard

* Added a template - "create-bucket-modal-template" to be used
when creating buckets. This template is used by CreateBucketModalView
Backbone view

* Bind the click event that triggers the transition to the create river/bucket
view in BaseAssetListView. This ensures that the binding is cascaded to
objects that extend this class
Merge branch 'dashboard-content-dev' into integration-dev
Merge branch 'dashboard-content-dev' into buckets-ui-dev
Fix CSS class names

* "button-white settings" and not "button-white-settings"
Fix class names

* The exception classes were prefixed with "Swiftriver" instead of "SwiftRiver"
This was causing Kohana to throw an ErrorException on *nix systems
(case-sensitive)
Merge branch 'class-naming-fix' into integration-dev
Fix drop meter display

* Do not calculate % of drop quota consumed when
the river has no drops
Merge branch 'buckets-ui-dev' into integration-dev
UI: System messages in modals; In-button "loading" icon
Merge branch 'ui-dev' into integration-dev
UI: Revised River messages
UI: Improved collaborator role selection
Merge branch 'integration-dev' into rivers-ui-dev
Bucket collaborators implemented