Test at_icon directly.
at_ui.module: Provide /at/twig/views form, tool to print available variable in views.
Remove hardcode in font path.
Check fontello directory is a git repo.
Move Icon and EmptyIcon class to Drupal\at_base\Icon namespace.
Refactoring getUnicodeChar method.
Refactoring getCss method.
Merge branch 'dev-master' of https://github.com/atdrupal/at_base into dev-master
Merge branch 'dev-master' into icon