subtheme bug fixes & a11y issue

#197 Add aria-labels to section tags a11y
#177 CKEditor Toolbar configuration bug
#193 Minor A11Y markup issue a11y
#191 subtheme is not working bug
#174 node edit submit buttons enhancement
#179 6-column layout text issues
#180 input checkbox disabled style enhancement
#185 module checkbox not visible :( bug
#186 fixed visibility of checkbox in modules
#176 Extend page (admin/modules) with module filter module: Form to large bug