Update DashboardPage.class.php

Dashboard module has been added
Merge pull request #186 from Sonlong/patch-1

Update DashboardPage.class.php
Added preset notifications
Merge branch 'master' of github.com:WoltLab/com.woltlab.wcf.user
Added function to hide profile menu tabs
Added template events
Merge branch 'master' of github.com:WoltLab/com.woltlab.wcf.user into WCF.User.QuickLogin