BUG: remove duplicate code in css files

* duplicate code generated in css files fixed by using less compiler > 1.4.1
* add readme.rst in /deploy/media/less/ to document compiling less styles
ENH: remove unused static files

Remove static files (*.js, *.css) files from first scipy central design
New files present in ./css, ./js folders
BUG: fix bootstrap glyphicons image urls

In the new compiled spc-bootstrap.css file, bootstrap glyphicons image urls are not rendered correctly.

Correct rendering:
<../../img/glyphicons-halflings.png> to <bootstrap/../../img/glyphicons-halflings-white.png>

With lessc 1.4.2 compiler (new compile files), glyphicon image file URL is rendered wrong as below

Wrong:
<../../img/glyphicons-halflings.png> to <../../img/glyphicons-halflings.png>

Solution:
add "bootstrap" string to the glyphicons manually
<bootstrap/../../img/glyphicons-halflings.png">

Observed files:
deploy/media/less/spc-bootstrap.less
deploy/media/css/spc-bootstrap.css