First commit on upload save
Save icebox uploaded file
Fix empty zip error, better storage tree
Implement input download feature
Add input download button and fix the template
Delete input files from fs when calculation is deleted
Show the platform calculation id instead of the engine one
Merge remote-tracking branch 'origin/master' into icebox-save-upload

Conflicts:
	openquakeplatform/openquakeplatform/icebox/urls.py
Merge remote-tracking branch 'origin/master' into icebox-save-upload
Merge branch 'master' into icebox-save-upload

Conflicts:
	openquakeplatform/openquakeplatform/icebox/views.py
Check if file exists before trying to delete it
Merge pull request #302 from gem/icebox-save-upload

[WIP] Download Icebox input file feature