updated 44 locale files [ci skip]
Do not fail when environment.sidekiq.retry is set to false, closes #4545
avoid publishing empty posts (fixes #4401)

invalidate empty posts when created by a local user

add changelog entry
Merge pull request #4542 from Raven24/empty_publishing

avoid publishing empty posts
refactor ConversationsController, move query builing to User model
Merge pull request #4547 from Raven24/conversations

refactor conversations_controller a bit
refactor twitter service model
Merge pull request #4387 from MrZYX/refactor_twitter

refactor twitter service model
refactor conversations_controller#create
Merge pull request #4551 from Raven24/conversations

refactor conversations_controller#create
refactor message creation (conversations)
Merge pull request #4556 from Raven24/conversations

refactor conversation message creation
Put the stream first in the left menu
Merge pull request #4569 from Flaburgan/reorder-menu

Put the stream first in the left menu
refactor publisher css
Merge pull request #4580 from svbergerem/refactor-publisher

Refactor publisher css
Improve the management of the contacts visibility settings in an aspect
Change icon when adding, fix #4568
force comments sort order in mobile spv
Merge pull request #4567 from Flaburgan/refactor-modify-aspect-facebox

Refactor modify aspect facebox