icebox:

Added initial sketch of icebox app.
update the opengeo suite inorder to copy the leaflet exposure js in place
revert hazard back to build.xml
some small adjustments
oq-ui-api/geonode/icebox/models.py:

Proper foreign key to django User table.
add interactivity option to the tilestream layers that are added to the app
move the layer controle to the top left
oq-ui-api/geonode/icebox:

Renamed `result` to `artifact`, since the icebox could be used to
store not only calculation results but input models as well.

In the future, they might also be linked together in some way.
oq-ui-api/geonode/icebox/views:

Basic implementation of `list_artifacts` and `import_artifacts` views.
oq-ui-api/geonode/icebox/views:

Pyflakes fixes.
oq-ui-api/geonode/icebox/views:

Completed implementation of all basic icebox views.
oq-ui-api/geonode/icebox/views:

Minor punctuation adjustment to the import_artifacts view response
message.
oq-ui-api/geonode/icebox/tests:

Added tests to achieve 100% code coverage for icebox.views.
oq-ui-api/geonode/icebox/icebox_api.md:

Added icebox api markdown doc. It's empty for the moment and needs to
be filled out.
oq-ui-api/geonode/icebox/icebox_api.md:

Added REST API doc for icebox.
oq-ui-api/geonode/icebox/icebox_api.md:

Rewording, typo fixes, and formatting cleanup.
update the plugin to build layers in a dynamic way
update the opengeo suite inorder to copy the leaflet exposure js in place
fix merge conflicts
revert hazard back to build.xml