Removed backticks which were causing PostgreSQL installations to crash
Merge pull request #1354 from victorelu/master

Removed backticks which were causing PostgreSQL installations to crash
Czech translation

all string translated
Merge pull request #1356 from lexislav/master

Czech translation
Optimized usage of composer on travis.

There is a preinstalled version of composer on travis-ci, so we should use it.
But still keeping the `self-update`, but making it failsafe with `|| true`, if getcomposer.org might be down.
Merge pull request #1359 from h4cc/patch-1

Optimized usage of composer on travis.
Fixed XSS in snippets generator

Under certain circumstances, parts of the client-supplied URL path would
be used in the "canonical" <link>, and no HTML-encoding was applied to
secure this, causing a reflected XSS vulnerability.

I have not been able to reproduce the exploit on my test environment,
but I have verified it on another system.
A parser for more complex permission queries
Extended permission query syntax

Now supports combining permission checks with "and" and "or".
Front-end permission checks
Changed hard failure to warning for missing permission rules

(the dreaded "the permission X is not assigned to any roles" error)
Added inline documentation on permissions
Revert "Added inline documentation on permissions"

This reverts commit a4e5fab1cb5ae5f1b4adbceee1c8de29b5967253.
Revert "Changed hard failure to warning for missing permission rules"

This reverts commit 2226f2decf38b4ffc4cf34130f2d3822081cec29.
Revert "Front-end permission checks"

This reverts commit 4b668b35c7c1246391fc045076b7ecc1eb3c3c77.
Revert "Extended permission query syntax"

This reverts commit 445a0857933b359fa204c378d1d3182720e8afc5.
Added confirmation for unlocking the slug. Might help with people inadvertently breaking links. Fixes #1364
MenuEditor extension 1.7.0: minor bugfix and italian translation

Courtesy of @iplume
Merge pull request #1369 from bacbos/master

MenuEditor extension 1.7.0: minor bugfix and italian translation
Show stack on edit pages, even if it's empty. Fixes #1307