URL escaping in API links not consistent, broken.

[jthomale]

Example: http://libuiapp01.library.unt.edu/catalog/api/v1/marc/?035a[matches]=^\(OCoLC

"_links": {
    "self": {
        "href": "http://libuiapp01.library.unt.edu/catalog/api/v1/marc/?035a[matches]=%5E%5C(OCoLC"
    }, 
    "next": {
        "href": "http://libuiapp01.library.unt.edu/catalog/api/v1/marc/?035a[matches]=^\\(OCoLC&offset=20"
    }
}, 

The _links["self"]["href"] URL converts characters in the query string to URL entities, while the _links["self"]["next"] URL does not. Additionally, "next" is escaping the backslash in the matches query criteria, while "self" is not, which apparently causes the "next" link to throw an error.