Sanitize css values

[hyan7]

Before you could only white-list certain attributes but not their values. I added the ability to specify values you want to white-list in the style attribute to filter out unwanted style values.

You can specify what styles you allow in the 'styles' array and what values you allow in certain style attributes through the 'cssValues' object, such as:
var sanitize = new Sanitize({
elements: ['a', 'br', 'li', 'ol', 'p', 'ul', 'span'],
attributes: {
a: ['data-id', 'href', 'target'],
span: ['class'],
'ALL': ['style']
},
protocols: {
a: { href: ['http', 'https', 'smartsheet'] }
},
styles: ["color", "background-color", "font-family", "font-size"],
cssValues: {
color: ["black", "red", "gray", "grey", "yellow", "white"],
backgroundColor: ["black", "red", "gray", "grey", "yellow", "white"],
fontFamily:["times new roman", "tahoma", "arial", "verdana"],
fontSize:["8pt", "9pt", "10pt", "12pt", "14pt", "16pt", "18pt", "20pt", "24pt", "28pt", "32pt", "36pt"]
}
});