Test for #824 bug
Set default readOnly explicitly to false
Addiitional test checking if changing readOnly settings through updateSetting overrides global setting.
Bugfix for #824. Lack of settings update after updateSettings() was caused by cache table called cellSettings, which wasn't cleared when settings were changing.
add info about google group
Merge branch 'master' into develop
Merge branch 'feature/bugfix-#824' into develop