renamed parts to use the official BGG naming

(items in BGG are "things", not just games)
some documentation

de.wt.bgg.ui/Application.e4xmi

@@ -13,10 +13,10 @@
         </children>
         <children xsi:type="basic:PartSashContainer" xmi:id="_AF1vQEqUEeqT5sxfmvJ5Tg" elementId="de.wt.bgg.ui.partsashcontainer.gamelist">
           <children xsi:type="basic:PartStack" xmi:id="_0MbRQEqTEeqT5sxfmvJ5Tg" elementId="de.wt.bgg.ui.partstack.gameslistconf">
-            <children xsi:type="basic:Part" xmi:id="_-Mdy0EqTEeqT5sxfmvJ5Tg" elementId="de.wt.bgg.ui.part.gamesconfig" contributionURI="bundleclass://de.wt.bgg.ui/de.wt.bgg.ui.parts.LoadGameDetailsPart" label="Load game details"/>
+            <children xsi:type="basic:Part" xmi:id="_-Mdy0EqTEeqT5sxfmvJ5Tg" elementId="de.wt.bgg.ui.part.gamesconfig" contributionURI="bundleclass://de.wt.bgg.ui/de.wt.bgg.ui.parts.LoadThingDetailsPart" label="Load game details"/>
           </children>
           <children xsi:type="basic:PartStack" xmi:id="_CS1yUEqUEeqT5sxfmvJ5Tg" elementId="de.wt.bgg.ui.partstack.gameslist">
-            <children xsi:type="basic:Part" xmi:id="_Ckm3wEqUEeqT5sxfmvJ5Tg" elementId="de.wt.bgg.ui.part.gamestable" contributionURI="bundleclass://de.wt.bgg.ui/de.wt.bgg.ui.parts.GamesListPart" label="Games list"/>
+            <children xsi:type="basic:Part" xmi:id="_Ckm3wEqUEeqT5sxfmvJ5Tg" elementId="de.wt.bgg.ui.part.gamestable" contributionURI="bundleclass://de.wt.bgg.ui/de.wt.bgg.ui.parts.ThingListPart" label="Games list"/>
           </children>
         </children>
       </children>

de.wt.bgg.ui/src/de/wt/bgg/ui/contributions/SourceFilterBggUser.java

@@ -66,7 +66,7 @@ public class SourceFilterBggUser extends Composite {
 	/// Create a control for a filter. 
 	// Filters are tristate: include iff has flag, include iff it does not have the flag, 
 	// don't care if it has that flag.
-	// TODO: are there more convenient widgets for this? drop-down needs two clicks to set... 
+	// TODO: create a three-way toggle button instead. 
 	private void makeFilter(Composite parent, String filterName, int defaultIdx) {
 		Combo filterCombo = new Combo(parent, SWT.READ_ONLY);
 		filterCombo.add("ignored");

de.wt.bgg.ui/src/de/wt/bgg/ui/parts/GamesListPart.java

@@ -1,5 +0,0 @@
-package de.wt.bgg.ui.parts;
-
-public class GamesListPart {
-
-}

de.wt.bgg.ui/src/de/wt/bgg/ui/parts/LoadGameDetailsPart.java

@@ -1,5 +0,0 @@
-package de.wt.bgg.ui.parts;
-
-public class LoadGameDetailsPart {
-
-}

de.wt.bgg.ui/src/de/wt/bgg/ui/parts/LoadThingDetailsPart.java

@@ -0,0 +1,5 @@
+package de.wt.bgg.ui.parts;
+
+public class LoadThingDetailsPart {
+
+}

de.wt.bgg.ui/src/de/wt/bgg/ui/parts/ThingListPart.java

@@ -0,0 +1,5 @@
+package de.wt.bgg.ui.parts;
+
+public class ThingListPart {
+
+}