ux(graph): widen input in general tab

public/app/partials/panelgeneral.html

@@ -8,7 +8,7 @@
 			<span class="gf-form-label width-6">Span</span>
 			<select class="gf-form-input gf-size-auto" ng-model="ctrl.panel.span" ng-options="f for f in [0,1,2,3,4,5,6,7,8,9,10,11,12]"></select>
 		</div>
-		<div class="gf-form max-width-21">
+		<div class="gf-form max-width-26">
 			<span class="gf-form-label width-8">Height</span>
 			<input type="text" class="gf-form-input max-width-6" ng-model='ctrl.panel.height' placeholder="100px"></input>
 			<editor-checkbox text="Transparent" model="ctrl.panel.transparent"></editor-checkbox>