Remove unused function placeholder from ServerTools
Remove outdated TODO from AdminUploadServlet
Add GWT codeserver parameter to URLs properly
Implement two SharedResourceTools placeholder functions

Also add javadoc to the class.
Remove outdated TODO

The query string is validated in the QueryDefinition constructor
Add validation when uploading new settings to AdminSettingsServlet
Uncomment unused row in test to prevent Java warning
Close error DialogBox in AdminPanel properly

Closes #20
Remove old TODO from GetStatsServlet

Cache clearing has been implemented