moved mixins to functions folder, removed mixin folder, added new function, updated gumby.scss and dependent ui scss files
deleted these mixins because they've been replaced and moved to functions
moved mixins to functions folder,
removed mixin folder,
added new function,
updated gumby.scss and dependent ui scss files

Merge branch 'feature/movingmixins' into develop
moved mixins to functions folder, removed mixin folder, added new function, updated gumby.scss and dependent ui scss files
Merge branch 'develop'