Check for template_include passing non-strings. Fixes #1134
Make search term `required` in search form.
Add some base comment styling

Ref #1197, #1111, #1181
Merge pull request #1198 from roots/base-comment-styling

Add some base comment styling
Formatting / syntax fix
Merge pull request #1182 from c2itllc/master

Make search term `required` in search form.
Merge pull request #1136 from tomdxw/feature/1134-template_include

Check for template_include passing non-strings. Fixes #1134