XF2 Addons [AndyB] Print friendly 1.6

Provides print friendly page for posts, conversations and resource content.

Added viewport meta data to HTML.

Print friendly v1.5 changes:

Now fully responsive.

Print friendly v1.4 changes:

Now uses a Print icon as link to the Print friendly page.

Print friendly v1.3 changes:

Added Options page to allow selecting Style ID for andy_print_friendly.less template.

Print friendly v1.2 changes:

Fixed issue with small attachments. Also fixed issue with editing the andy_print_friendly.less template.

Print friendly v1.1 changes:

Added Print button to print friendly page.