Fixes a few minor bugs
Changelog:
- fix: Mails sent from WebGUI now wrap at 78 characters, as the SMTP
RFC asks, to fix problems with some SMTP servers when lines exceed
998 characters. (The Next Phase / MedIntellibase)
- fix: Fatal Errors Kill Login Session
- fix: Calendar Event recurrence stretching over daylight savings time changes use wrong times
- fix: In IE, 'Insert WebGUI Image' loses some attributes
- fix: Collaboration System threads sometimes unable to find next/previous thread