Fix another 500 in the mobile site for signed out browsing
Disables submit button in sign up form after submission to avoid email already exists error
Changelog updated
updated 73 locale files [ci skip]
Merge pull request #4515 from fubik/develop

Disables submit button in sign up form after submission to avoid email already exists error
Add a white background to images shown in the lightbox
Fixes issue #4475
Fix issue #4499: changed :width in .item_count to :min-width
add missing shoulds
remove commented test and fix typo
remove repeated step and stop using the publisher to create posts when is not necessary
add mobile test for comment mobile
Adding media files from Joindiaspora's S3 storage

Changing 404 message to no longer use Joindiaspora's media on S3
Merge branch 'WebSpider-remove_s3_dependency' into develop
Merge pull request #4525 from marekjm/bugfix/issue-4499

Fix issue #4499: changed :width in .item_count to :min-width
Merge pull request #4526 from movilla/comment_mobile_test

Add mobile test: logged out user mobile
Merge pull request #4510 from diaspora/improve_tests2

Improve tests2
Add a white background to the images shown in the navigation bar of the lightbox
Add a white background to ALL the images in the navigation bar of the lightbox
Change .timeago color and align notification, fix #4502
hardcode default(=fallback) language