Changed the ugly code used for selecting a role for a new groupmember to
a pretty one. Now you can choose a role from a drop-down list.

Removed the option to remove a member from a group when you are creating
a group since the group will be empty on creation and the function of
removing members will be accessed from ProjectLeader.
Merge branch 'master' of https://github.com/ada10lgu/etsn05.git