ReAdd has_children variable that got lost during refactoring.

Two differen pull requests: #931 and #935 altered the Fork cache
building process. This commit fixes a line that got lost while fixing
merge confilicts.
SetDebugMessage was set twice
Merge pull request #1009 from MathiasDewelde/patch-1

SetDebugMessage should have been setDebugEmail
Capitalize blog module & action names

I noticed on a live server that I got a /404 instead of the blog name & action url. When I capitalized "Blog" and "Detail", I got the correct url
Merge pull request #1015 from jessedobbelaere/Blog-geturlforblock-capitalized

Capitalize blog module & action names
Don't directly inject $_GET parameters in html.

The Search module created a canonical tag containing a directly injected
$_GET parameter. This commit makes sure we encode specialcharacters
making XSS impossible. Fixes #1018
Prepare Fork for release 3.8.4
Merge remote-tracking branch 'upstream/master'

Conflicts:
	composer.lock