Changing data-icon in favor of data-label-icon

data-icon is used by many css fonts like font awesome or css themes like flat-ui and others, using data-icon adds unexpected content because of the css rule ```[data-icon]:before {content: attr(data-icon);}```
Merge pull request #40 from Pasvaz/patch-1

Patch 1
remove Changing data-icon in favor of data-label-icon

remove Changing data-icon in favor of data-label-icon
Add class for font icons in mini-switches

Add class for font icons in mini-switches
Removed the icon-prefix
Merge pull request #42 from Pasvaz/patch-1

Removed the icon-prefix
Update bootstrap-switch.js
fixed setAnimated bug

fixed setAnimated bug
Update index.html
Update index.html
Create flat-ui-fonts.css
Update index.html
Merge pull request #105 from BdMdesigN/v.1.8

V.1.8