Bug fixes

#775420: "Access Denied" when trying to delete

#774130: "With Thumbnail" slider
#773896: Works only on reload

* Added ls_node_title() function which can be used to display language-dependent node title in Views (see project page for details.
* Several small fixes and performance improvements/reduced memory.

This release fixes [561270].

Fixed a critical bug where every slash got removed from the logo URL.

This is a maintenance release, see changelog:
Code cleanup: fixed typo errors, thanks to camidoo
Bugfix: 'Run cron when nothing to do' setting was not saved, thanks to camidoo
Bugfix: Added validation to cron delay settings in administration form