Added logging of client-side errors and associated browser information.
Initial layout of admin page with sections.
Added isAdmin flag to persons.
Updated README file.
Only allow administrators to run manage commands.
Moved syncing local PDF cache to external sources.
Moved publish together.
Unnecessary file.
Renamed manage files to admin files.
Only publish errors and arXiv syncing data if user is administrator.
Don't continue automatically to other buttons anymore, we have a special button now.
Implemented sample data method.
It is really not a good idea to name anything Error and override native exception object.
PDF cache syncing is independent of sources.
Now that error URLs work, we can link to them.
Rewrap text.
Merge branch 'master' into new-admin-dashboard

Conflicts:
	client/admin.coffee
Merge branch 'master' into new-admin-dashboard
Merge branch 'master' into new-admin-dashboard
Log more data when error happens.