users can now request an identifier and admins can generate them
ref #86
closes #86
users can now request a doi and an admin can automatically generate/submit a doi for a document
ref #87
closes #87
Added docstrings and reformatted the file
ref #87
closes #87
mp3 attachments no longer raise exception due to missing file icon. changed formatting of large dict to be more readable.
ref #24
closes #24
checking access right for zip export, quickfix for #117
temporary quickfix ref #114
getStartNode was broken and returned wrong start nodes, closes #36

* this bug resulted in wrong workflow graphics
* comparing ids with names doesn't work ;)
all fixes/changes related to the auto doi generation are now complete
closes #115
bibtex import now supports chars: à, À, č, and Č
closes #60
added re.unicode flag to frontgarbage expression so that umlauts are now spared from being thrown away
closes #78
fail if requests module is missing, closes #109
fixed german translations for identifier module
ref #115
team decision not to send mail text through TAL interpreter at this place; closes #114
added 'mp3' to the list of types. closes #56
added feature for deleting one of duplicate files. ref #104
fixed the full display of objects in the standard theme. ref #1
Merge branch 'devel'
added feature for moving nodes to a different step in the workflow. ref #102
Revert "added feature for deleting one of duplicate files. ref #104"

This reverts commit e2442747f70941674837dfb2535bee058c8a42b4.
added feature for deleting one of duplicate files. ref #104