Remove some other jQuery UI scripts on the CBOX Theme dashboard.

These scripts can conflict with the hotfix added in commit 87a8c0d.

See #169.  Fixes #183.

Props @christianwach.
Change verbiage from "Site Feature" to "Featured Slide".

See #184.

Props @vothsco.
Improvements to 'features' post type visibility.

- If slider is turned off, don't register the 'features' post type.
- If slider is used with a post category, don't show in the 'New'
  WP adminbar menu.
Toggle 'Slide Options' metabox when post category is checked on a
'Post' admin screen.

 When the slider's featured category is checked in the "Add New Post"
 or "Edit Post" admin page, some inline javascript will either show or
 hide the "Slide Options" and "Video Options" metaboxes.

 This only takes effect if the slider is set to use a post category.
Only register 'features' post type if slider is in post type mode.

Basically, redo the logic in commit b2a13d73c2.
Follow WP whitespace and braces convention.
Fix 'Creating default object from empty value' warning.
Bump version number to 1.0.7
fix for missing blog icon in group tab
Merge pull request #192 from JonathanReeve/master

fix for missing blog icon in group tab