Support HTTP Status 509

Whilst this isn't an official RFC, it's documented on e.g. Wikipedia. http://en.wikipedia.org/wiki/List_of_HTTP_status_codes#5xx_Server_Error
Espanol language patches, thanks Vladyslav Kozlovskyy
Merge pull request #292 from flavour/master

Support HTTP Status 509
fixed problem with multiple uris and lazy tables
Adds bind capability to OpenLDAP

Adds to OpenLDAP (mode=uid and mode=cn) the capability to bind to the directory with an admin account in order to search it.
adding spanish plurals, thanks Vlad Vladyslav
replace write to stderr with LOGGER in failed database connection attempt
possible to fix to memdb threading issue
improved performance on mssql4
memdb conflict check, thanks Luca
Added two libs and icon path to setup.py
Update ru.py
fix issue 1777:MongoDB: upload representation error, thanks Francisco Betancourt
fixed 1774:CAS client broken when using routes.py, thanks remco.boerma
Merge pull request #293 from magnunleno/patch-1

Adds bind capability to OpenLDAP
Merge pull request #294 from timrichardson/issue/1773

replace write to stderr with LOGGER in failed database connection attemp...
Merge pull request #295 from niphlod/enhancement/mssql4

improved performance on mssql4
Merge pull request #297 from xbello/master

Added two libs and icon path to setup.py
Merge pull request #298 from chuckis/patch-1

Update ru.py
fixed 1771:MongoDBAdapter ILIKE and widget.autocomplete, thanks Francisco