Fix link to create sub-task from a task view.
[jan] Fix link to create sub-task from a task view.
Default external task priorities to normal.
Fix setting task list name for external tasks.
Fix exception name.
[jan] Fix setting task list name for external tasks.
Improve tickets returned as tasks.

Don't send inompatible priority.
Don't send task list id that requires internal knowledge.
Prefix ticket number.
[jan] Prefix ticket number exported via tasks API.
Use Horde's fixed style.
[jan] Fix CSS styling of comment text.