Add some grammars to actionpack

[nekova]

Add grammars list

• skip_before_action
• prepend_before_filter
• after_action
• skip_after_action
• prepend_after_filter
• around_action
• prepend_around_filter

  Before :crying_cat_face:

After :smile_cat:

[kevinsawicki]

Cool, thanks for adding these :ship:

[nekova]

thanks :octocat: