Added tree it currently only support a view state.

Added tree it currently only support a view state. Styling is still not complete
and it still requires comment on some of the code it is currently.
Mark with FIXME in all the places comments a required.

issue A24Group/Triage#2396
Fixed a spacing and a few issues missed when moving the tree to ssGWT-lib

Fixed a spacing and a few issues missed when moving the tree to ssGWT-lib

issue A24Group/Triage#2396
Completed the Tree component

Completed the Tree component

issue A24Group/Triage#2396
Change the Tree and TreeNode so it is not a parameterized type anymore

Change the Tree and TreeNode so it is not a parameterized type anymore.
Also added a README for the tree.

issue A24Group/Triage#2394
Fixed comment found it the review process

Fixed comment found it the review process

issue 24Group/Triage#2394
Fixed comment found it the review process

Fixed comment found it the review process

issue 24Group/Triage#2394
Merge pull request #150 from Sh33pman/createResourceTree

Resource Tree