Fixes bug #274 (updates overview button on button click)
Add messages for successful votes and invalid votes
Add ability to set active session from url
Don't count votes that are -1 (invalid)
Removes a comment at the end of the action listener
Updates the toolbar buttons after a game state change
Merge pull request #278 from TheTeam8s/bug-website

Bug website
Merge pull request #277 from TheTeam8s/updateOverviewButton

Update overview button
added submit final estimate panel to statisticsInfoPanel
added submit final estimate panel to statisticsInfoPanel
infoPanel is now initialized at an appropriate point
removed submitEstimateButton from statisticsDetailPanel and added it under the submit final estimate field
changed spacing slightly to acomidate lables for submitted and invalid estimates
enter final estimate field now checks to see if the input value is a positive integer
changed name of buildSubmitEstimateBox function to buildSubmitEstimateField
submit estimate button now submits valid estimates to the requirement manager
statisticsInfoPanel now has a function to format the mean as an integer. submitting a final estimate now refreshes the table in requirement manager
submit final estimate panel autofills with the mean of the votes for that estimate
user can now resubmit a final estimate, although there is no visible difference between a new and modified final estimate
refactored refresh function in StatisticsInfoPanel