Deleted documents index gets broken when space name is invalid

Steps to reproduce

1. Install Ldap Tools
2. Setup LDAP mapping and in the group mapping enter following value (with 4 forward white spaces before each line)

       XWiki.XWikiAdminGroup=cn=AdminRole,ou=groups,o=MegaNova,c=US|\
       XWiki.Organisation=cn=testers,ou=groups,o=MegaNova,c=US
   

3. this will result in improper group creation in bad spaces:
   • %0A++++XWiki.XWikiAdminGroup
   • ++++XWiki.Organisation
4. delete both spaces with all files
5. go to deleted documents index - you will notice that it's broken (see attached MessedUpDeletedDocuments.png) But if you'll check the response with firebug - proper deleted documents list will be there.
6. trying to delete %0A++++XWiki.XWikiAdminGroup with rest call e.g. "deleteUrl" : "/xwiki/bin/delete/%0A++++XWiki/XWikiAdminGroup?id=168" will fail complaining that the URL is bad - the only way to fix things is to delete the documents from xwikirecyclebin directly in the database.

Expected behavior
Validation should be added to

• [MUST] Space creation
• [MAY] Mapping property of the LDAP Tool