Minification related refactoring

[emileber]

There's a lot of repeated code that could benefit from a refactoring, with minification in mind, without impeding readability.

Stuff like:

this.picker = $(this.options.template);
if (this.options.customClass) {
    this.picker.addClass(this.options.customClass);
}
if (this.options.inline) {
    this.picker.addClass('colorpicker-inline colorpicker-visible');
} else {
    this.picker.addClass('colorpicker-hidden');
}

could be changed to:

var options = this.options,
    $picker = this.picker = $(options.template);
if (options.customClass) {
    $picker.addClass(options.customClass);
}
if (options.inline) {
    $picker.addClass('colorpicker-inline colorpicker-visible');
} else {
    $picker.addClass('colorpicker-hidden');
}

And minified (with formatting to compare), it would look like this:

var o = this.options,
    p = this.picker = $(o.template);
if (o.customClass) {
    p.addClass(o.customClass);
}
if (o.inline) {
    p.addClass('colorpicker-inline colorpicker-visible');
} else {
    p.addClass('colorpicker-hidden');
}

Just in that small example, 44 bytes were saved. #BytesLivesMatter

This has to do with property names which can't be minified, so this.options can't be minified.

I'd be honored to propose a pull request (when I'll have time, like next week) if that's okay.