Added new UI to select a specific CA certificate

With this change there is no need to wait for all certificates being loaded
anymore (this happens only when the user opens the selection activity).

src/frontends/android/res/layout/profile_detail_view.xml

@@ -91,6 +91,33 @@
             android:layout_height="wrap_content"
             android:text="@string/profile_ca_auto_label" />
 
+        <RelativeLayout
+            android:id="@+id/select_certificate"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:minHeight="?android:attr/listPreferredItemHeight"
+            android:background="?android:attr/selectableItemBackground"
+            android:padding="10dp" >
+
+            <TextView
+                android:id="@+id/select_certificate_title"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:textAppearance="?android:attr/textAppearanceMedium"
+                android:text="@string/profile_ca_select_certificate_label" />
+
+            <TextView
+                android:id="@+id/select_certificate_subtitle"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_below="@id/select_certificate_title"
+                android:layout_alignLeft="@id/select_certificate_title"
+                android:textAppearance="?android:attr/textAppearanceSmall"
+                android:textColor="?android:attr/textColorSecondary"
+                android:text="@string/profile_ca_select_certificate" />
+
+        </RelativeLayout>
+
     </LinearLayout>
 
 </ScrollView>