update_status 5.x-2.3

Bugs fixed since 5.x-2.2:

• #295152 by dww: Fixed version comparison bug that resulted in '5.1' being confused with '5.10'. Arguably this is a PHP bug, but we need to work-around it for now, anyway.
• #275051 by dalin: Fixed bug where the notification threshold setting wasn't working due to a typo in the name of the variable. This bug was introduced in version 5.x-2.1 via #197186.
• #217977 by dww: Fixed bug in Spanish (es) translation where the list of included modules was not printed due to a missing '%modules'.

Other changes since 5.x-2.2:

• #232041 by dww: Increased the PHP time limit while fetching updates.
• #238564 by scor: Made the link text in a watchdog message translatable.
• Updated German and Polish translations