No need to convert twice the timezone, it's covered at the beginning of the method
Do not convert date/times when adding/editing meeting since we store the timezone in the DB
Add possibility to visualize a calendar in another timezone than the one set in FAS
Make sure we find a calendar/meeting before continuing and otherwise say so and goto index
Fix the CopyToClipboard javascript method

The current url used contained the root where the application is deployed while this is
also present in the 'text', so using the host_url avoid having twice the root present.

Fixes https://fedorahosted.org/fedocal/ticket/84
Merge pull request #77 from fedora-infra/change_tzone

Change tzone