publish usage.application event during file upload
Merge pull request #116 from jsilvestre/master

Various changes
update build
merge conflict
Merge pull request #118 from poupotte/master

Publish usage.application event during file upload
Improved: better vertical alignment in file list
Fixed: smart refresh didn't refresh removed items
Fixed: folder's clearance set to 'public' couldn't be changed afterwards. Close #119
Refactored: public area and private area now share the same code. Close #117
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