Add "dependency not loaded" message

src/main/java/net/frankheijden/serverutils/config/Messenger.java

@@ -22,6 +22,7 @@ public class Messenger {
                     "file_changed", "&cAccessing the jar file while %action%ing &4%what%&c went wrong, please load the plugin manually!",
                     "invalid_description", "&cAn error occurred while %action%ing &4%what%&c, plugin doesn't have a valid description!",
                     "invalid_plugin", "&cAn error occurred while %action%ing &4%what%&c, plugin is invalid!",
+                    "unknown_dependency", "&cAn error occurred while %action%ing &4%what%&c, plugin has a dependeny which is not loaded: &4%arg%",
                     "update", Defaults.of(
                             "available", "&8&m------------=&r&8[ &b&lServerUtils Update&r &8]&m=--------------\n"
                                     + " &3Current version: &b%old%\n"

src/main/java/net/frankheijden/serverutils/managers/PluginManager.java

@@ -33,6 +33,8 @@ public class PluginManager {
             plugin = Bukkit.getPluginManager().loadPlugin(file);
         } catch (InvalidDescriptionException ex) {
             return new LoadResult(Result.INVALID_DESCRIPTION);
+        } catch (UnknownDependencyException ex) {
+            return new LoadResult(Result.UNKNOWN_DEPENDENCY.arg(ex.getMessage()));
         } catch (InvalidPluginException ex) {
             if (ex.getCause() instanceof IllegalArgumentException) {
                 IllegalArgumentException e = (IllegalArgumentException) ex.getCause();

src/main/java/net/frankheijden/serverutils/managers/Result.java

@@ -12,12 +12,25 @@ public enum Result {
     FILE_CHANGED,
     INVALID_DESCRIPTION,
     INVALID_PLUGIN,
+    UNKNOWN_DEPENDENCY,
     ERROR,
     SUCCESS;
 
+    private String arg;
+
+    Result() {
+        this.arg = "";
+    }
+
+    public Result arg(String arg) {
+        this.arg = arg;
+        return this;
+    }
+
     public void sendTo(CommandSender sender, String action, String what) {
         Messenger.sendMessage(sender, "serverutils." + this.name().toLowerCase(),
                 "%action%", action,
-                "%what%", what);
+                "%what%", what,
+                "%arg%", arg);
     }
 }