wired the task display to use the task tree
killed off the screwy old task tree function
wired the task tree to appear when viewing the projects module
wired task assignees to display in the task tree
fixed up the column spacing
wired the flexifield implementation for the task list
wired the flexifield fields for the project-view task list

Resolves http://bugs.web2project.net/view.php?id=1351
wired the flexifield to work with the project designer

Resolves http://bugs.web2project.net/view.php?id=1575