converted IDs to lowercase
Merge branch 'master' into feature/IDs

Conflicts:
	templates/partials/lists/articles.tpl
	templates/partials/lists/slides.tpl
	templates/partials/lists/tools.tpl
	templates/partials/lists/videos.tpl
removed more special chars from id's and made search work
Merge pull request #112 from stefanjudis/feature/IDs

converted IDs to lowercase