added a check for the time zone and modified it so that its shown as abbreviated accross all the OS and browsers
minor changes
Added a list of timezones to tent, can be used for fetching abbreviated zone , full name and timezone offset if one is provided
modified the timezone abbreviation and name methods to match the closest strings in case the given UTCOffset used to access the time zones represents more than one areas
formatting support now uses the new methods to find timezone abbreviation if required
added unit tests for new timezone methods
added check for existence of UTCOffset