Amend the project's caveats with additional info

The recent discussion on the repo-discuss mailing list [1]
about the rename-project plugin highlighted extra caveats that
need to be mentioned in the project about page.

[1] https://groups.google.com/forum/#!topic/repo-discuss/qTBdsURCQdw

Change-Id: I85be76e8d9e3fe5f6d09e6e6dc425a8216790581
diff --git a/src/main/resources/Documentation/about.md b/src/main/resources/Documentation/about.md
index 311e2e6..e151be1 100644
--- a/src/main/resources/Documentation/about.md
+++ b/src/main/resources/Documentation/about.md
@@ -27,6 +27,17 @@
 
      If choosing to rename "All-Users", you cannot rename the project as this action is prohibited.
 
+* You cannot rename projects that are watched by users
+
+     If you rename a project that is actively watched by users, the watches are
+     not updated to the new project name, leading to the loss of the notifications
+     by all users that were watching the original project.
+
+* You should limit project renames to administrator users
+
+     Because of all the above caveats, it is not recommended to allow any non-admin
+     user to perform any project rename.
+
 Replication of project renaming
 -------------------------------
 
@@ -47,5 +58,5 @@
 plugin) or the 'Administrate Server' capability. Project owners are
 allowed to rename their own projects if they are members of a group that
 is granted the 'Rename Own Project' capability (provided by this
-plugin).
-
+plugin). However, because of all the caveats of this plugin, it is not
+recommended to delegate the 'Rename Project' capability to any non-admin user.