Merge pull request #2 from kuzmichevdima/master

problem with synchronization is solved. Locale/language of tool speech-t...
Merge pull request #3 from kuzmichevdima/master

fixed bugs: 1) mupltiple instances of one explanation
1) проблема с файлом рекордов исправлена
2) разные небольшие декоративные улучшения
Update README.md
изменение интерфейса
Merge remote-tracking branch 'origin/master'
1) submitting log: added getChatEntry and sendWordLog
2) sayCurrentExplanation (for repeat button)
3) onNextExplanationButtonClick (for next button)
4) Toasts with correctWord (when finishing) and right/wrong user answers
5) some functions refactoring