Implemented Project Overview

Available / visible only if logged in as a ProjectManager.
Minor change to user permissions

Coordinators and TeamLeaders are now able to create and edit Tasks.
partial fix to poorly formatted xml output
Merge remote-tracking branch 'upstream/master'
saving is now done in Model.java, can be overridden with inheritance - this allows all models save functionality out of the box
Merge pull request #26 from ryantk/master

partial fix to poorly formatted xml output
Resolved merge conflicts
Merge branch 'master' of https://github.com/Craig1987/MPPMS_Assignment
Resolved more merge conflicts
Fixed compilation error
Implemented Add/Remove buttons on Content Hierarchy
Merge branch 'master' of https://github.com/Kirstyvox/MPPMS_Assignment