Adds Twitter username from settings to template
Replaces substr with ltrim
Updates changelog
Adds Twitter to backend settings
Fixes indentation
Merge branch 'feature-twitter-name-forkcms' of github.com:jonasdekeukelaere/forkcms into jonasdekeukelaere-feature-twitter-name-forkcms

Conflicts:
	CHANGELOG.md
Merge branch 'jonasdekeukelaere-feature-twitter-name-forkcms'