Added a new exception class: "InvenioWebSubmitIconCreatorError". Raised by websubmit_icon_creator.
Added a new exception class: "InvenioWebSubmitIconCreatorError". Raised by
websubmit_icon_creator.

tiborsimko/invenio,inveniosoftware/invenio,inveniosoftware/invenio,tiborsimko/invenio