[qhanzi] Options page

[Ben Bullock]

I've added a page of options here:

https://www.qhanzi.com/option.html 

for the qhanzi.com web site.

The behaviour of the pages remains the same unless the user selects an option. Two options currently exist, one is to turn off opening a new window for search results, and the other is to turn off the "input box". If the input box is turned off, something or another has to be provided. Provisionally I've made the links go to zdic.net's kanji dictionary.