Allow dev-master dependencies in composer
Fixed composer constraints
Use new config API for adding cms additions
BUG Normal users (non-ADMIN) can't create any email recipients
BUG SubmittedForm can't be created by non-ADMIN
userforms.yml: changed FieldEditor.js to UserForm.js (Issue #126)

Since the FieldEditor.js is replaced by UserForm.js, userforms.yml should point to that file.
Merge pull request #127 from theAlien-01/patch-1

userforms.yml: changed FieldEditor.js to UserForm.js (Issue #126)
Fixing docs to refer to "framework" instead of "sapphire"
FIX: update visibility of static
Use form page icon in page tree
Use form icon in cms tree