[security] take care uidrels may contains a relation targetting something else than a constant node (eg IN function)

[ms] this test is already done before putting a relation in uidrels

cleanup

[security] experimental rqlst cache for read security: to activate using a 'security-rqlst-cache' flag in transaction data when you'll issue a lot of identic queries with only kwargs varying

[read security] minor optimizations

[web] get rid of spurious '[Errno 2] No such file or directory' on load This was caused by can_do_pdf_conversion() which tries to use '/usr/bin/fop'. When fop was not available, an OSError was raised by suprocess.Popen. This changeset first checks for /usr/bin/fop presence, then tries to run fop. If an error occurs, log it instead of printing it. NOTE for later: why do we test explicitly for "/usr/bin/fop" rather than simply "fop" ?

backport stable

[schema sync] fix another potential name error on synchronizing rdefs

[schema sync] don't try to synchronize infered relation defs, fixing a name error on the way

cleanup