OR-818 clean filestore if file upload is cancelled during execution
OR-818 add 404 page
OR-818 update angular-file-upload to last version
OR-818 fix bug : upload file canceler was shared among all files
OR-818 cancel running attachment upload on message edition cancel
Merge pull request #640 in OR/rse from OR/rse-gcrosmarie:OR-818 to master

* commit 'c458b57bf46a321a37ddbdb4a3f090e79a7d1432':
  OR-818 cancel running attachment upload on message edition cancel
  OR-818 fix bug : upload file canceler was shared among all files
  OR-818 update angular-file-upload to last version
  OR-818 add 404 page
  OR-818 clean filestore if file upload is cancelled during execution
OR-818 fix linters
Merge pull request #647 in OR/rse from OR/rse-gcrosmarie:OR-818 to master

* commit 'c784f24782638ad85d8c11c861e44b5defe8c77b':
  OR-818 fix linters