Remove old translation files.
Version bump to 0.2.0-alpha-1.
Completely recode, well, pretty much the entire thing.
Make sure to include the sidebar file.
Move translations to the `languages` folder.
Move stylesheets to the `css` folder.
Move scripts to the `js` folder.
Update references to the scripts and styles files.
Correct reference to `css` folder.
Update the HTML and add Schema.org support.
Rename `panel.css` to `sliding-panel.css` and `panel.js` to `sliding-panel.js`.
Add the intial stage of custom options for the plugin and use it to grab the open/close labels.  Plus, inline doc updates for the scripts/styles.
Add a plugin settings page.
Update translation files.
Update the plugin header info.
Add license.txt file.
Overhaul readme.txt.
Drop the old readme.css and readme.html files.
Update screenshots and readme.txt.
Add readme.md file.