Bug 916411 - [fugu][Buri][Calendar]The event display abnormally when title/where/notes is long r=gaye

**do not merge this yet!!!**

still waiting for the merge of https://github.com/mozilla-b2g/gaia/pull/15335 and https://github.com/mozilla-b2g/gaia/pull/15372 so I can rebase and fix conflicts!