Update deps
Some work to make the twig template files match up
Update dependencies
Add first draft of the recognised extension developers page
Make changes to the Extensions index and recognised developers page
Add the official extensions page
Minor change on the official extensions page to allow some extra information specific to developers.
Add Installing and Extensions Development Team pages
Add an Extensions Team overview page
Update the links and text on the Customise menu in the header
Fix wrong title on the recognised developers page
Decapitalize Extension where applicable
Create the writing extensions page. The HTML still needs to be prettied up.
Fixes to extension pages PR
Merge remote-tracking branch 'vse/updates' into task/extensions-content

Conflicts:
	src/Phpbb/WebsiteInterfaceBundle/Resources/views/Extensions/home.html.twig
	src/Phpbb/WebsiteInterfaceBundle/Resources/views/Extensions/official-extensions-team.html.twig
	src/Phpbb/WebsiteInterfaceBundle/Resources/views/Extensions/official-extensions.html.twig
	src/Phpbb/WebsiteInterfaceBundle/Resources/views/Extensions/recognised-developer.html.twig
Missed a couple of replacements
Merge branch 'master' into task/extensions-content

Conflicts:
	composer.lock
Some soft changes
Revert changes to site-wide menu
Add tests