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Styling and markup updates for Email Members page

This commit involves a 'quick and dirty' solution for injection Bootstrap
markup into the Email Members form. Basically, on the admin.php page
powering the group profile admin pages (a custom theme file), there is a
conditional that uses a custom function for the Email Members page,
ommitting the groups_custom_edit_steps action from this page altogether.
Obviously this is not an ideal solution and will be explore more fully in
a future release, along with other plugin/markup situations.

The custom functions for Email Members are located in the newly created
email-funcs.php file (in the functional library), and are pulled from the
Buddypress Group Email Subscription core
Styling and markup updates for Your Email Options page under Course
Profile

See full explanation for what is happening here in commit
3e3e6525187b51c23d59adde95c0e43230afda71

In this particular case, a catch on the homepage is routing the Your Email
Options page to a custom notifications.php file under groups->single. This
file calls a custom function based on a function from the Buddypress Email
Group Activity plugin. The main goal of this custom function is to inject
Bootstrap markup into the Your Email Options form
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