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
fix bug #4832 select language for email content when invite a friend
bug #4832 - send the rspec test and changelog
Remove auto 'mark as read' for notifications
Merge pull request #4929 from santosgabriel/develop

fix bug #4832 select language for email content when invite a friend
Merge pull request #4810 from svbergerem/notifications-no-auto-mark-as-read

Remove auto 'mark as read' in notifications dropdown
Improve set read/unread in notifications dropdown
Merge pull request #4869 from svbergerem/improve-notifications-dropdown

Improve set read/unread in notifications dropdown
Switch back from Roboto to Helvetica on bootstrap pages
port bookmarklet to Backbone.js, use gon for params (fixes #4931)
fix race condition in cukes
cleanup some publishing/posting cukes, hopefully stabilizing them
Merge pull request #4922 from Flaburgan/from-roboto-to-helvetica

Switch back from Roboto to Helvetica on bootstrap pages
disable publisher after successfully posting in standalone mode