update checkbox
remove comments from database.yml
edit .gitignore
add karamzin
fix checkbox
Merge branch 'feature/add_karamzin' into develop

* feature/add_karamzin:
  fix checkbox
  add karamzin
Merge branch 'release/1.0.20'

* release/1.0.20:
  fix checkbox
  add karamzin
  edit .gitignore
  remove comments from database.yml
  update checkbox
Merge tag '1.0.20' into develop

Add Karamzin gem

* tag '1.0.20':