Revert "change config key name"

This reverts commit ee79a7dcfbf7a9d32802e5555eceeaf7db485bff.
fixes dictionaries option
re-factor base.lua
update libpinyin requires
Update the symbol of the ibus indicator
fixes lua 5.2 compile
remove pyxdg depends
support setContentType method
update ibus requires
bump version 1.6.92
fixes pinyin properties
drop IBUS_BUILD_LIBPINYIN macro
remove PYRegex.h
re-factor setup dialog
update main2.py
drop uuid deps
rename Intelligent Bopomofo to Bopomofo
move logics to class PYEngine
fixes a typo
use type pinyin_option_t