Version nos. display below tool/lib/mode
Added version number in new version available msg
"Last Updated" shows if "lastUpdated" field is present

lastUpdate field is a Unix Timestamp in millisecs
TODO: Add lastUpdated everywhere in contributions.txt, .properties file
A few final changes to Last Updated
Merge pull request #2651 from joelmoniz/modeVersionNum

Contribution Version Number, Latest Contribution Version available and Last Date on which contribution was updated now show (Resolves #2498 and #2561)