portlet update
Added Gridster Portlets to center div.
added json encoding as a fallback for XML encoding failure

Change-Id: I814f76645cf936ed7f18b837965d17ff4be9c440
"edit bin names" no longer saves unedited names

Change-Id: Ie35b61d6f2bf354c90a55ae714c334882873e6b5
Added session state property for layout choices in CytoscapeWebTool tool.
Merge branch 'master' of github.com:IVPR/Weave
No longer showing menu items with no label, and added option to provide
a 'shown' function to control menu item visibility.
Now when logging is disabled, all unsaved changes are discarded
during undo/redo.
New 'presentation mode' which disables session history recording.
changed private function name
Merge remote-tracking branch 'origin/master' into foo

Conflicts:
	WeaveUI/src/weave/ui/SubMenu.as