Dummy Manage Filters Panel
Added Filter class
Creat AddFilterController, Observer and FiltersModel

Signed-off-by: Hui Zheng <fengyimzy@gmail.com>
Add Filter controller observer and FiltersModel
Signed-off-by: Hui Zheng <fengyimzy@gmail.com>
Merge branch 'dev-team3' into feature-Category&Filter

Conflicts:
	Calendar/src/edu/wpi/cs/wpisuitetng/modules/calendar/controller/toolbarview/ToolbarController.java
	Calendar/src/edu/wpi/cs/wpisuitetng/modules/calendar/view/AddEventTabPanel.java
	Calendar/src/edu/wpi/cs/wpisuitetng/modules/calendar/view/ToolbarPanel.java

Signed-off-by: Hui Zheng <fengyimzy@gmail.com>
-Made FilterEntityManager
-Added Copyright comments for: FiltersModel, Category, Filter.
Made Delete and Get for Filters

I made these based off of the Commitment Delete Controller and Request
Observer and the Get Controller and Request Observer
A little more for FilterPanel GUI side

we should refactor it from ManageFiltersPanel to AddFilterPanel in order
to keep consistency with the other buttons and also to better describe
the functionality of this feature.
Merge branch 'dev-team3' into feature-Category&Filter

Conflicts:
	Calendar/src/edu/wpi/cs/wpisuitetng/modules/calendar/view/AddCategoryPanel.java
	Core/WPISuite/WebContent/WEB-INF/lib/WPISuite-Interfaces.jar
	Core/WPISuite/src/edu/wpi/cs/wpisuitetng/ManagerLayer.java
Everything for Filters is now in the project

let me know if something doesn't work
Merge branch 'feature-Category&Filter' into dev-team3