Improve language detection
copied to https://github.com/languagetool-org/languagetool/issues/139
Different quotation marks related mistakes for Russian
Fixed by https://github.com/languagetool-org/languagetool/commit/63e153fb16164c4...
LT lacks check of non-letter symbol after quotation mark
Now implemented as NO_SPACE_CLOSING_QUOTE (i.e. a pattern rule, not a Java rule)
Another interesting resource: http://blog.mikemccandless.com/2011/10/accuracy-an...
spell-checking with user dictionaries