Made burndown chart a bit more reusable
Burndown chart visual improvements

* Add month markers
* Don't mark weekends if more than 3 months timespan is shown
Minor burndown chart fixes

* Wrap items/effort radio buttons so several charts work on same page
* Fix 'uninitialized value in multiplication' warning
Use max value as start point for ideal burndown line

This makes it work better with remaining/actual graph as items often
don't have the effort estimates from the beginning
Add option to sort buglist in descending order

For unprioritized items the ones needed seem to be often the latest, so
it's easier if they are sorted by id in descending order
Fix team removal
Fixes to pass bugzilla template tests
Add is_active flag to team

* DB field
* Editor to change the team active status and name
Split active and inactive teams in team list
Bugzilla 4.4 compatibility fixes

Fixes #8, fixes #11
Fix 'include_list' param in burndown chart
Fix for the WebService bug to hash on BZ 4.4
Fix the timetracking field names in the help
Fix copy paste error
Remove trailing commas from JS