add autocomplete for model class field
fix to "You don't want to generate model class name if it is already entered."
ajax removed
remove ajax from controller
fixed asterisk bug, update chanelog
fic changelog spaces
Add Chinese Translation Team
Merge remote-tracking branch 'chinesization/master'
Update intro-upgrade-from-v1.md

I think it is a small mistake.
Merge pull request #4007 from qiansen1386/patch-7

guide mistake: suppose to be "role", not "name" I think.
Merge pull request #4008 from lucianobaraglia/translation-es

English guide typo [skip ci]
Update README [skip ci]
transalating intro-upgrade-from-v1, left with asset, query builder, form, etc.
Finished widget tutorial [skip ci]
Update translation-status.md
Merge pull request #4011 from lucianobaraglia/translation-es

Spanish guide structure-controllers.md [skip ci]
Minor changes in Estonian translation
Merge pull request #4014 from stevekr/master

Minor changes in Estonian translation
更新文档
Fix typo [skip ci]