Added help tooltip for modifications

src/app/components/ModificationsMenu.jsx

@@ -50,11 +50,13 @@ export default class ModificationsMenu extends TranslatedComponent {
    * @return {React.Component} List
    */
   render() {
+    let { language, tooltip, termtip } = this.context;
     return (
       <div
           className={cn('select', this.props.className)}
           onClick={(e) => e.stopPropagation() }
           onContextMenu={stopCtxPropagation}
+          onMouseOver={termtip.bind(null, 'HELP_MODIFICATIONS_MENU')} onMouseOut={tooltip.bind(null, null)} 
       >
         {this.state.list}
       </div>

src/app/i18n/en.js

@@ -29,6 +29,8 @@ export const terms = {
   PHRASE_UNLADEN: 'Ship mass excluding fuel and cargo',
   PHRASE_UPDATE_RDY: 'Update Available! Click to refresh',
 
+  HELP_MODIFICATIONS_MENU: 'Double-click on a number to enter a new value, or drag along the bar for small changes',
+
   // Other languages fallback to these  values
   // Only Translate to other languages if the name is different in-game
   am: 'Auto Field-Maintenance Unit',