Merge pull request #594 from NicoleRauch/master

Bugfix #310
refactored display of nicknames to use a mixin and added the link to the history list in wiki
Merge pull request #595 from leider/master

refactored display of nicknames to use a mixin and added the link to the...
new versions of "marked" and "passport"
updated dev dependencies to current release versions except "chai"
Merge pull request #596 from leider/master

dependencies version dump