OC 6.0.0a - Fixed graphic glitch in "edit event" form

Added width to #fromtime and #totime classes in order to avoid a grapic glitch on "edit event" form in calendar (see screenshot for details)

![calendar-glitch](https://f.cloud.github.com/assets/1663025/1754287/75cfd916-664d-11e3-9f2b-3292b9ac049f.jpg)