Fixing bug where still some times were shifted when viewing free/busy from someone else.

Signed-off-by: Michel Verbraak <michel@1st-setup.nl>
Working on useragent preference

Signed-off-by: Michel <info@1st-setup.nl>
Merge branch 'master' of github.com:1stsetup/exchangecalendar
Added useragent preference. User can now determine self what kind of useragent string is used.
Aligned ecExchangeRequest to use global functions interface.

Signed-off-by: Michel <info@1st-setup.nl>
Prepared version 3.2.0-Beta22

Signed-off-by: Michel <info@1st-setup.nl>
Merge branch 'master' into mail