Fix project transfer feature

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Fix 500 error when rename repository

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Version to 6.4.1

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Fix upgrader

It created branch based on current branch which is an old version

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Version to 6.4.2

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Add 6.4.1 and 6.4.2 CHANGELOG

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Conflicts:
	CHANGELOG
don't use unicorn worker killer if PhusionPassenger is defined
Version to 6.4.3

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Update Gemfile
Update Gemfile.lock
Merge pull request #5955 from wishlistmaster/6-4-stable

Gem 'gon' issue on Ubuntu LTS
Fix 'gon' gem install failure. refs #5955
Merge pull request #5983 from yasuoza/fix/6-4-stable

Fix 'gon' gem install failure. refs #5955
omniauth-env applyed