added initial support for HKP key servers, allowing searching and key import

Update issue 9
Can search a key server now, touch a result to import the key. Still needs better error handling and some Intents to import keys based on key ID. Also still need key server preferences.

res/layout/key_server_query_layout.xml

@@ -0,0 +1,48 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- Copyright (C) 2010 Thialfihar <thi@thialfihar.org>
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="fill_parent"
+    android:layout_height="fill_parent"
+    android:orientation="vertical">
+
+    <LinearLayout
+        android:layout_width="fill_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal">
+
+        <EditText
+            android:id="@+id/query"
+            android:layout_width="0dip"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"/>
+
+        <Button
+            android:id="@+id/btn_search"
+            android:text="@string/btn_search"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"/>
+
+    </LinearLayout>
+
+    <ListView
+        android:id="@+id/list"
+        android:layout_width="fill_parent"
+        android:layout_height="0dip"
+        android:layout_weight="1"/>
+
+</LinearLayout>