Design & Style

Redefinition of the interface to improve YOURLS experience.

![yourls](https://f.cloud.github.com/assets/846943/884981/83754682-f9c4-11e2-8a31-cdbadf301303.png)
*Second interface preview. Need completions.*

Interface Styling
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- [x] Design with HTML5 - CSS3 
	* [Bootstrap 3.0.0](https://github.com/twitter/bootstrap/pull/6342)
	* [Flat UI](http://designmodo.github.io/Flat-UI/)
	* [Font Awesome](http://fontawesome.io/)
	* Introduce Responsive-design
- [x] Clean HTML template
	* Clean declarations
	* More separated container
		* Header simplifying
		* Nav improving
		* Foot cleaning
- [x] Basic Installation corrections
	* Be friendly with errors - notices
	* Fix interface when re-loading installation
- [x] Loading pages & animation
- [x] Reduce request and loading time
	* Minimize in one file all code
- [x] Improve JavaScript
	* jQuery [2.0.0](http://blog.jquery.com/2013/04/18/jquery-2-0-released/)
	* ZeroClipboard
	* New interactions
- [x] Move assets in `assets/` folder
- [x] Move flags into CSS

Themes
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- [x] Create `theme-sample` repo
	* Import & use LESS files
- [x] Allow overwriting official style - resolves #1234
	* CSS - JS enqueue
	* Filters
- [x] Customize HTML structure
- [x] Add [full bootstrap](https://github.com/LeoColomb/full-bootstrap-yourls) theme

Extra
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### Coding Style
- [x] Clean PHP with HTML
- [x] Apply strictly standards everywhere

### Specific Cases
- [x] Fix unlicensed favicon
- [x] Remake graphically `readme.html` - resolves #1390
- [x] Twitter profile