Merge branch 'release/3.1.16' into develop
Updates
Removed deprecated query() in favor of execute()
Make sure spin icon is not overrided when using ZLUX Spin
New lang strings
Skip compressing vendor folder
ZLUX Ajax request handling common errors
Lang string update
Installer improvement
ZLField minor fix
Plupload updated to v2.1.2
Bumped version/changelog
Merge branch 'release/3.1.17'