Preserve unrecognized data binding

[Munawwar]

Use case: To use htmlizer on server-side to do a render, but preserve any event binding for client-side so that it can be used with knockoutjs.

However, the use case I only anticipated is that the same template would be used on client and server side, and so currently data-bind attribute is completely stripped off by htmlizer.

Note: There could be a second use case, where user needs to do a partial render with htmlizer. To solve that, we'll need a separate attribute like data-htmlizer or something.

[Munawwar]

Having an attribute like data-htmlizer can solve both use cases. It will be through a boolean config parameter named "noConflict" (default false). It will also not process any containerless statements that begin with "ko " prefix.