[ldapfeed] if a deactivated user becomes available again in its source, reactivate it (closes #2542776)
* cwusers that see their ldap source counterpart disappear are
deactivated
* until now they were not activated again on reappearance
* note this behaviour in the doc
\.svn
^build$
^dist$
\.pyc$
\.pyo$
\.bak$
\.old$
\~$
\#.*?\#$
\.swp$
^doc/book/en/apidoc$
\.old$
syntax: regexp
.*/data/database/.*\.sqlite
.*/data/database/.*\.config
.*/data/database/tmpdb.*
.*/data/ldapdb/.*
^doc/html/
^doc/doctrees/
^doc/book/en/devweb/js_api/