Decode html entities in Search pane's word results for malformed diction...

[chulai]

...aries. Issue #53

@Abs62 or @dragonroot can any of you review these changes? My tests showed that it fixes issue #53 but I'm not sure if there is a better way to do it or it can handle correctly all encodings.

[Abs62]

1. Such unescaped headwords lost connection with its articles because index entries still non-unescaped. I think it needs to convert such bad words during indexing of a dictionary.
2. I am not sure about '<' symbol. Some dictionaries have legal entries with it which can be corrupted by such conversion. Urban dictionary, for example. I think it needs only to check '&' symbol together with ';' symbol.

PS. How about QTextDocumentFragment instead of QTextDocument?

[chulai]

I will check all your suggestions. I didn't notice first point because the terms were duplicated in the dictionary. i.e. with html entities and unescaped.

[Abs62]

Modified and introduced into code.