Event names are not limited

[Galarzaa90]

Platform information

• Operating system: Windows 10/Raspbian Jessie
• Python version: 3.6
• Repository branch: rewrite

Bug information

When creating an event or editing it's name, there seems to be no character limit at all, letting the user create events with really long names that might break their messages.

Steps to reproduce::

1. Create an event with a really long name
2. Event is created

Expected result:
The event creation should be denied, notifying the user the event's name was too long.

Actual result:
Event gets created