base: less bundle fix

* Fixes renaming issue in upstream bower component of less.js.

Signed-off-by: Lars Holm Nielsen <lars.holm.nielsen@cern.ch>
email: celery error email fix

* Fixes issue with celery not sending error emails due to config
  variable ADMIN being set different by the Flask Email extension.

Signed-off-by: Lars Holm Nielsen <lars.holm.
debug_toolbar: error reporting fix

* Fixes an issue where an error message would be produced even if
  Flask-DebugToolbar was explicitly disabled via DEBUG_TB_ENABLED
  set to False.

Signed-off-by: Lars Holm Nielsen <lars.holm.nielsen@cern.ch>
deposit: problem with files upload

* Fixes problem with wrong interpretation
  of `application/json` MIME type in IE9.

Signed-off-by: Adrian Pawel Baran <adrian.pawel.baran@cern.ch>