UI improvements, distinguish between project and tasks by using green for projects, blue for tasks. Minor database upgrade to allow for some UI improvements. Release new version 2.21b1
Added in task 'delete', with significant code from Chris Davies. Adds in a new view for active tasks, a new column for pm_tasks that keeps track of whether a task is deleted or not, and adds in new delete pages. Includes upgrade scripts. There may be code that still needs to switch to using the pm_tasks_active view, but I caught all the obvious ones. Bump to version 2.13b2.