Change variables in camelCase to words separated with “_”
Merge pull request #1114 from Wylkon/3.3.0

Change variables in camelCase to words separated with “_”
Removing space.
Adjusting title link.
Adjusting page config plugins.
Creating page config users.
Creating page config mobile.
Creating page config language.
Creating page config Google Analytics.
Creating page config Favicon.
Adjusting page icons to plugins and settings.
Replacing button to input submit.
Adjusting page settings language accord UX.
Adjusting page setting users accord UX.
Create page settings publish.