fix DroxPerms interaction with primary group

This adds an option that tries to guess if the Main-group of a Player
should be changed. This feature is disabled by default to not break
backward-compatibility.
To activate this, the following needs to be added to the DroxPerms
config file:

Vault:
  useOnlySubgroups: false

remove unused DroxPerms jar

pom.xml

@@ -57,6 +57,10 @@ Vault currently supports the following: Permissions 3, PEX, GroupManager, bPerms
 		    <id>krinsoft</id>
 		    <url>http://files.krinsoft.net:8085/nexus/content/groups/public</url>
 		</repository>
+		<repository>
+			<id>escapecraft-repo</id>
+			<url>http://dev.escapecraft.com/maven</url>
+		</repository>
 	</repositories>
 
 	<dependencies>
@@ -73,11 +77,9 @@ Vault currently supports the following: Permissions 3, PEX, GroupManager, bPerms
 			<systemPath>${project.basedir}/lib/MiConomy.jar</systemPath>
 		</dependency>
 		<dependency>
-			<groupId>de.hydrox.bukkit.DroxPerms</groupId>
+			<groupId>de.hydrox.bukkit</groupId>
 			<artifactId>DroxPerms</artifactId>
-			<version>0.4.0-SNAPSHOT</version>
-			<scope>system</scope>
-			<systemPath>${project.basedir}/lib/DroxPerms-0.4.0-SNAPSHOT.jar</systemPath>
+			<version>0.5.0</version>
 		</dependency>
 		<dependency>
 			<groupId>net.krinsoft</groupId>

src/net/milkbowl/vault/permission/plugins/Permission_DroxPerms.java

@@ -20,6 +20,7 @@ public class Permission_DroxPerms extends Permission {
 
     private final String name = "DroxPerms";
     private DroxPermsAPI API;
+    private boolean useOnlySubgroups;
 
     public Permission_DroxPerms(Plugin plugin) {
         this.plugin = plugin;
@@ -30,6 +31,8 @@ public class Permission_DroxPerms extends Permission {
             if (p != null) {
                 API = p.getAPI();
                 log.info(String.format("[%s][Permission] %s hooked.", plugin.getDescription().getName(), "DroxPerms"));
+                useOnlySubgroups = p.getConfig().getBoolean("Vault.useOnlySubgroups", true);
+                log.info(String.format("[%s][Permission] Vault.useOnlySubgroups: %s", plugin.getDescription().getName(), useOnlySubgroups));
             }
         }
 
@@ -112,12 +115,28 @@ public class Permission_DroxPerms extends Permission {
 
     @Override
     public boolean playerAddGroup(String world, String player, String group) {
-        return API.addPlayerSubgroup(player, group);
+        if (useOnlySubgroups) {
+            return API.addPlayerSubgroup(player, group);
+        } else {
+            if ("default".equalsIgnoreCase(API.getPlayerGroup(player))) {
+                return API.setPlayerGroup(player, group);
+            } else {
+                return API.addPlayerSubgroup(player, group);
+            }
+        }
     }
 
     @Override
     public boolean playerRemoveGroup(String world, String player, String group) {
-        return API.removePlayerSubgroup(player, group);
+        if (useOnlySubgroups) {
+            return API.removePlayerSubgroup(player, group);
+        } else {
+            if (group.equalsIgnoreCase(API.getPlayerGroup(player))) {
+                return API.setPlayerGroup(player, "default");
+            } else {
+                return API.removePlayerSubgroup(player, group);
+            }
+        }
     }
 
     @Override