[Qhanzi] Improvements

[Ben Bullock]

I'm continuing to work at improving the accuracy of the handwriting recognition at qhanzi.com. Currently the test scores look like this:

Total 49041 tests, found: 48095 (98.071%), average position: 1.58336625428839.

That means that I have 49041 user inputs identified to a specific hanzi, and of these inputs about 98% are correctly recognised within the first twenty results, and the average position of the hanzi (with one being the leftmost position and twenty being the rightmost) is about 1.6.