Minor settings markup collation rework.
Added checkbox for emoticons setting.
Removed now unnecessary emoticons dropdown on settings page.
Code style fix.
Fixed reference to emoticons setting in twitter.php
Minor update to ordering in Emoticons.php
Changed settings page to allow the manual entry of tweets per page value
Removed unnecessary arrays for dropdowns that no longer exist.
Fixed typo in function call.
Changed Tweets Per Page checkbox to Textbox.

Whoops...
Added size limit to Tweets Per Page textbox.
Merge branch 'settings_rework'