menubar (#804)

* menubar 1

* zoom switching

* centering, pixel perfect canvas

* remove dead args and code

* clipping

* remove log

* if

* connect props

* lint

* undo

* logo left, componetize

* graph back to full height

* shadow to top

* do not prematurely call event handlers during render

* change test to deal with async histogram creation

* left section padding

* lint

* adjust graph to account for top bar,

* lasso tests

* refine histogram tests

* remove testing (onlys)

client/src/components/categorical/categorical.js

@@ -19,13 +19,6 @@ class Categories extends React.Component {
           padding: globals.leftSidebarSectionPadding
         }}
       >
-        <p
-          style={Object.assign({}, globals.leftSidebarSectionHeading, {
-            marginTop: 4
-          })}
-        >
-          Categorical Metadata
-        </p>
         {_.map(categoricalSelection, (catState, catName) => (
           <Category key={catName} metadataField={catName} />
         ))}