The changes to @revisioning broke when ajax requests came through with trailing…

The changes to @revisioning broke when ajax requests came through with trailing slashes on the URLs. This makes sure that the trailing slash gets left out of the name.

common/lib/xmodule/xmodule/modulestore/__init__.py

@@ -19,7 +19,7 @@ URL_RE = re.compile("""
     (?P<org>[^/]+)/
     (?P<course>[^/]+)/
     (?P<category>[^/]+)/
-    (?P<name>[^@]+)
+    (?P<name>[^@/]+)
     (@(?P<revision>[^/]+))?
     """, re.VERBOSE)