Gii excess forms. Fixes #1818
changed vars
using camelcase
Merge PR #1914 branch '1818-gii-excess-forms' of https://github.com/johonunu/yii2

* '1818-gii-excess-forms' of https://github.com/johonunu/yii2:
  using camelcase
  changed vars
  Gii excess forms. Fixes #1818
changed gii files code style and CHANGELOG for #1818