Only display full stacktrace, not error and stacktrace. (was unnecessary)
Removed display of page name in wiki.
Merge pull request #639 from leider/express4

Express4
Merge remote-tracking branch 'upstream/master'

Conflicts:
	lib/wiki/views/get.jade
	views/errorPages/500.jade
Does not work if there is a blank in the path.
Added friendly title to the landing page.
Merge pull request #640 from Tekashi/master

Minor UI tweaks