Merge pull request #161 from xipasduarte/xipasduarte

New Language (pt_PT) and description correction on options.php
Update readme.
Add additional tests for media uploader.
Quick and rough first pass at moving the plugin into a class based structure.
Finish moving functions into classes.  Cleanup issues from last commit.
Sets option name to use on init.  No longer deletes options when plugin is removed.
Make sure santization class is added.
Style updates for WordPress 3.8.
Add version to enqueued scripts.
Allow options pages without tabs.
Declare Interface class functions static.
Update screenshot image for higher res display.
Make sure notices don't error when options aren't present in theme.
Issue #165.  Fix wp_admin_bar link.
Update .pot file for translations.
Fix strict static notices.
Update readme to latest stable.
Update screenshot.
Version 1.7.1.  Fix to ensure optionsframework_option_name is read after admin_init.
Increase default width of text inputs.