Fix LOAD_START

The URI is not yet available at this time. Both WebKit1 and WebKit2 send
this signal after data structures have been allocated for a load, but
before anything related to it has actually been done.
Use the view's URI when sending load status events
Merge branch 'dev/fix-load-start' into next

* dev/fix-load-start:
  Use the view's URI when sending load status events
  Fix LOAD_START