Wizard fixes as discussed here: https://swift-project.slack.com/archives/G7GD2UP9C/p1534597257000200

- improved message for initial data loading
- Simulator wizard page before 1st model set page
- 1st model set component, forced directory loading (and not just displaying model cache)

src/blackgui/components/firstmodelsetcomponent.ui

@@ -27,7 +27,7 @@
       <item>
        <widget class="QLabel" name="lbl_Explaination">
         <property name="text">
-         <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;&lt;span style=&quot; font-size:9pt;&quot;&gt;The model set defines which aircraft you will use in the simulator. From all models you have installed on your disk you can select a subset actually being used.&lt;br/&gt;&lt;br/&gt;1) Reload your models if not already done&lt;br/&gt;2) Create your model set and SAVE the model set&lt;/span&gt;&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+         <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;&lt;span style=&quot; font-size:9pt;&quot;&gt;The model set defines aircraft you will use in the simulator. From all models you have installed on your disk you can select a subset actually being used for model matching.&lt;br/&gt;&lt;br/&gt;1) Reload your models if not already done&lt;br/&gt;2) Create your model set and SAVE the model set&lt;/span&gt;&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
         </property>
         <property name="textFormat">
          <enum>Qt::RichText</enum>
@@ -178,6 +178,9 @@
       </item>
       <item row="1" column="2">
        <widget class="QPushButton" name="pb_ClearModelDir">
+        <property name="toolTip">
+         <string>clear directory or multiple directories</string>
+        </property>
         <property name="text">
          <string>clear</string>
         </property>
@@ -218,6 +221,7 @@
   <tabstop>pb_ModelsTriggerReload</tabstop>
   <tabstop>le_ModelSetInfo</tabstop>
   <tabstop>pb_ModelSet</tabstop>
+  <tabstop>pb_CreateModelSet</tabstop>
  </tabstops>
  <resources/>
  <connections/>