SignalR Bug Fixes & Minor UI Changes

Document Template import status and Device Enrolment status fixes.
Attachment download fixes for SignalR foreverFrame transport. Database
queries for Devices, Jobs and Users updated. Device attributes (model,
profile, batch) now shown in various places.
Bug Fix: Floats must come first [Firefox]

Floated elements need to come first, otherwise float layout occurs
underneath non-floated content.
Feature #44: Image capture WebRTC & HTML5 FileIO

Silverlight was previously used to capture webcam pictures and upload
file attachments. HTML5 FileIO is now used for all attachment uploading
- including drag-drop support. WebRTC is used to capture webcam images -
this falls back to a Flash polyfill when WebRTC isn't supported.