Expose GitWeb config via /config/server/info REST endpoint

In the Gerrit Client retrieve the GitWeb configuration via REST and
remove the GitWeb configuration from the config that is embedded in
the host page data.

In order to provide the GitWeb configuration from the REST endpoint
the GitWeb configuration must be bound in the sysinjector (the binding
of the GitWebModule stays in the webinjector).

Change-Id: I640e645f6c9a72d5539f33e28721f0cff93e732d
Signed-off-by: Edwin Kempin <edwin.kempin@sap.com>

gerrit-server/src/test/java/com/google/gerrit/server/config/GitWebConfigTest.java

@@ -0,0 +1,42 @@
+// Copyright (C) 2011 The Android Open Source Project
+//
+// 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.
+
+package com.google.gerrit.server.config;
+
+import com.google.gerrit.server.config.GitWebConfig;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+import org.junit.Test;
+
+public class GitWebConfigTest {
+
+  private static final String VALID_CHARACTERS = "*()";
+  private static final String SOME_INVALID_CHARACTERS = "09AZaz$-_.+!',";
+
+  @Test
+  public void testValidPathSeparator() {
+    for(char c : VALID_CHARACTERS.toCharArray()) {
+      assertTrue("valid character rejected: " + c, GitWebConfig.isValidPathSeparator(c));
+    }
+  }
+
+  @Test
+  public void testInalidPathSeparator() {
+    for(char c : SOME_INVALID_CHARACTERS.toCharArray()) {
+      assertFalse("invalid character accepted: " + c, GitWebConfig.isValidPathSeparator(c));
+    }
+  }
+}