Checks if a user modified a session in the edit panel and checks if the user wants to discard changes if there were changes.
Modified session change checking when creating a session to ignore the default session name
Correctly checks if the planning poker session name is the default name when trying to close the tab prior to saving
Removed system printing in the planningPokerTab readyToRemovefcn
No longer prompts user about closing the tab after submission button is clicked
Merge pull request #83 from TheTeam8s/feature-discardSessionChanges

Feature discard session changes
Rebased with team8s on 4/11 at 3:15. Start to implement closing sessins.