Revert "Allow query string parameters besides 'ui' in URL"
Revert "Allow query string parameters besides 'ui' in URL"

This reverts commit eafb5adfdc99ef87e9eee9fbe6f49eed9a41a8a9.

yankl/bookreader,yankl/bookreader,yankl/bookreader,yankl/bookreader,yankl/bookreader