Add description field to milestone
|Reported by:||Christopher Lenz||Owned by:||Christopher Lenz|
See #364, plan for iteration 3.
An important aspect of the improved milestone support is to be able to describe the milestone scope, for example by listing plan items (possibly referring to tickets etc). For this, the milestone db table needs an additional
description field, and the milestone form needs to allow editing of the description, including wiki-formatting.
The description should also be displayed on both the roadmap and milestone views.