exposed query parameters added after existing hash

Problem/Motivation

If the current url already contains a hash, the query parameter will be added after. On page reload, the query parameter are not correctly submitted to the view.

Steps to reproduce

Create a view with an exposed filter and enable view ajax history.
Add hash to the url and submit exposed input.
Reload the page.

Proposed resolution

Modify the cleanURL function to strip hash from base url and add it after the inserted query parameter.

Remaining tasks

User interface changes

API changes

Data model changes