Fixed so white theme looks good with new search and editor panes, Closes #735, and other small fixes and polish

src/css/less/variables.light.less

@@ -38,7 +38,7 @@
 @submenuBorder:         @white;
 
 // Tabs
-@fullEditBorder:          @white;
+@fullEditBorder:          @grayLighter;
 
 // Graphite Target Editor
 @grafanaTargetBorder:         @submenuBackground;
@@ -96,7 +96,7 @@
 
 // Lists
 @grafanaListBackground:  transparent;
-@grafanaListAccent:         #f9f9f9;
+@grafanaListAccent:         @grayLighter;
 @grafanaListBorderTop:      #eee;
 @grafanaListBorderBottom:   #efefef;
 @grafanaListHighlight:      @blue;
@@ -111,6 +111,11 @@
 @tableBackgroundHover:              #E8F8FD; // for hover
 @tableBorder:                       #ddd; // table and cell border
 
+// Scrollbars
+@scrollbarBackground: @grayLighter;
+@scrollbarBackground2: @grayLighter;
+@scrollbarBorder: @grayLight;
+
 // Buttons
 // -------------------------
 @btnBackground:                     @grayLighter;
@@ -186,7 +191,7 @@
 
 // Input placeholder text color
 // -------------------------
-@placeholderText:         @gray;
+@placeholderText:         @grayLight;
 
 
 // Hr border color