Added New Plugin and Cell Editing
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New Plugin - TitleBar and Demo Page for Title Bar
Pager Plugin (minor enhancemnet) - Added Pagesize Dropdown

Cell Editing
Editor feature is added - this will need further refinement and refactor of code
Currently 3 Cell Editors are added (Text ,DateTime , ComoboxBox Editor)
A CellEditorMediator is added to mediate between Grid and Editor classes

Grid , added Title Property to support TitleBar plugin
  Added Functions to Support Editor Functionality , added set pageSize method

GridCell , is now not caching data in Model(getModel/setModel) and to support
  editor feature added RemoveContent Method

Closure-Library Updated