Fixed successful login resetting attempts
Added PDF support to marking page
Added IcePDF library
Removed *.jar from .gitignore
MSPanels now have `ok to navigate` status

- Navigating away from a page that isn't `ok to navigate`
  will prompt the user (next commit)
`ok to nav` checks now occur in MasterFrame
In progress markingpages
Next now works, Fixed #250
Click the Shark, then wait... (and turn up your volume)
Eye colour change lag is now gone