LT-249: Creating inactive state for header row

Packages/lesiontracker/client/components/lesionTableHeaderRow/lesionTableHeaderRow.styl

@@ -12,6 +12,12 @@ $headerRowHeight = 63px
   margin-top: 2px
   width: 316px
 
+  &.inactive .add
+    cursor: not-allowed
+
+    svg
+      fill: #5A666D
+
   div
     align-items: stretch
     flex: 1
@@ -24,6 +30,7 @@ $headerRowHeight = 63px
     padding-left: 2px
 
     svg
+      fill: #C1D8E3
       height: $headerRowHeight
       max-width: 11px