Alpha UI update (#95)

* added localization options
//todo add all the strings

* broken push

* merge to UI

* broken push

* Alpha rebase complete, added asset loader for UI branch

* merge to UI

* UI now uses assetmanager

* added NL and EN for all strings currently in UI

* fix small merge error

---------

Co-authored-by: Ticho Hidding <tichohidding@gmail.com>
Co-authored-by: ramollia <@>

framework/src/main/java/org/toop/framework/asset/resources/CssAsset.java

@@ -0,0 +1,17 @@
+package org.toop.framework.asset.resources;
+
+import java.io.File;
+
+@FileExtension({"css"})
+public class CssAsset extends BaseResource {
+    private final String url;
+
+    public CssAsset(File file) {
+        super(file);
+        this.url = file.toURI().toString();
+    }
+
+    public String getUrl() {
+        return url;
+    }
+}