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