added empty_value
Fix typo
Update service_container_parameters.rst
better grammar
a bit of indentation
moving reference from debugging to templating formats to fix problem with note giving wrong link
clarification difference between function and tag includes
update according to stofs comments
[#2813] Tweaks to explaining how variables are passed into included templates and making references to older include tag easier to get more information about
Merge pull request #2816 from Nyholm/patch-1

Missing field in documentation: Added empty_value
EventDispatch implements the Mediator pattern, not the Observer pattern
Merge remote-tracking branch 'origin/2.2' into 2.2
some corrections
improvements and typos
updates various
Merge branch '2.2' into 2.3