Merge branch 'testing-client'
Remove custom colors from ComponentActionMenu items
Create ParameterActionPanel

Adds a set of action buttons to the top of the Parameter panel. It's an
analog to ModelActionPanel.

Need to find out why it's situated visibly (about 2 px?) below the
ModelActionPanel on the Model panel.
Vertically align content in Model and Parameters panels
Adjust droplist styles to match textboxen

The heights now match.

The text in the droplist (select box) is vertically aligned on Chrome,
but not on Firefox. To middle-align the text on Firefox, I added
padding-top, which is ignored on Chrome. See:
http://stackoverflow.com/questions/5439782/i-want-to-vertical-align-text
-in-select-box
Display wait cursor when loading components, parameters
Add new Constants class

Currently, constants used in WMT are strewn across the classes where
they're used. This revision gathers all constants in a single location.

I'm choosing not to implement the GWT Constants interface because it's
not needed at this time.
Replace local constants with definitions from Constants
Add tooltip text to Constants
Add component info item to model "More" menu

Since we deleted the "Components" panel, we need a way for a user to
get information about a component before instantiating it. This menu
selection displays a list of components. When the user can selects a
component from the list, a ComponentInfoDialogBox is displayed, showing
basic information and a link to the component page on the CSDMS website.
Move menu dimensions constants to Constants
Set pointer cursor for menus in CSS, not source code
Add tooltips to menu items in ComponentActionMenu
Move SIGN_IN and SIGN_OUT constants to Constants
Activate the reset button in the ParameterActionPanel
Rename CSS rule for ActionPanels

This includes the ModelActionPanel and the ParameterActionPanel.
Use CSS to set pointer type in MoreActionsMenu
Update DataManager to use Constants
Prune unused code from DataManager
Activate the view input files button in the ParameterActionPanel