Views ajax history broken after page reload

Patch in #17 causes issues with range filters, because field names that end with [xxx] are converted to []. That casues problems on range filters, where the field names end with [min] and [max].

There were problem with checking options on first loaded page, when filter were multivalue. Code will explain this (lines starting with + are new ones added in #19, compared to #18):

// On first loaded page, url can have filters passed in query. They are
// present in window.location.search. Let's add them to initial filters,
// when getting back to first loaded page.
$.each(parseQueryString(window.location.search), function(filter_name) {
+  // The options.data object stores entries keyed by filter name,
+  // which works well for single-value filters. For multi-value entries,
+  // the filter name includes '[]' at the end. We need to remove it
+  // before checking if options.data has the filter with given name.
+  filter_name = filter_name.replace(/\[]$/, '');
    if (!options.data.hasOwnProperty(filter_name)) {
      options.data[filter_name] = this;
    }
});