Fix arguments for hevercardable helper

We should pass person object to the hovecrardable helper. In the
current case `this` is the status message, not the status
author. So, let's pass `author` instead of `this`.
Tests for hovercard in reshares

Coverage with tests is necessary for every feature
Use capybara hover method in the hovercard steps

Let's use methods provided by capybara whenever possible.
Make step name more logical
Make feature consistent with other features.

Actually, I just trying to make this feature pass.
Check user name presence instead

It seems that loading of stream is not completed before trying to activate hovercard.
I do not want to add explicit pause to the scenarion. Let's check link presence before activating hovercard.
I added the validation for blank to poll question and poll answer
Refactoring method Notification#notify
Unescape text before add mention, this commit solve #4776
Do not try to render posts/comments which are not present

refs diaspora/diaspora#4959
Validate on report that post or comment does exist
Merge pull request #4961 from Zauberstuhl/report_feature_issue_4959

Do not try to render post/comment report which does not exist
updated 83 locale files [ci skip]
add 'loginAs' to bookmarklet spec
Rake task for running outstanding account deletions
unset any stream that might be left over from earlier specs
Remove duplicate checkbox in Settings

Fix issue #4964
Merge pull request #4965 from marienfressinaud/develop

Remove duplicate checkbox in Settings
Remove hack from exporter

I couldn't reproduce what the comment states anymore, so I just removed
it. This fixes a minor issue where html wouldn't be escaped in the
export.

Thanks to A Kai (@sixhundredns) for reporting.
Render flash message content with .text

.html does not escape any html input in these, leading to XSS
attack vectors.

Thanks to A Kai (@sixhundredns) for reporting the related issues.