fix documentation errors
fix Japanese translation
fix spelling errors and invalid line breaking
Allow accent in the PATH of Ren'Py directory

Before the change, you get an uncaught exception when there is an accent in the Path. With that change, it works.
Merge pull request #136 from kyouryuukunn/has_quicksave

Change the default for config.has_quicksave to True.
Merge pull request #122 from kyouryuukunn/do_autosave_in_menu

Force autosave on menus and input.
Merge pull request #149 from antoinentx/patch-1

Allow accent in the PATH of Ren'Py directory
Merge pull request #131 from vbkaisetsu/fix-doc-errors

Fix documentation and jp translation errors.
add quit label as the common quit process
set quit_action to ui.gamemenu(_quit_prompt) if more than v6.15.7