Revert "Merge pull request #4847 from hincupetru/3692-hashtags-inside-markdown-link"

This reverts commit 06ab49862059e5076eb88180e7f182194bcd8ebe, reversing
changes made to 3c4d8d95d3a94bc3eec43793982977d50d5854b5.

Conflicts:
	Changelog.md
Check if the hashtag is a link in function .hashtagify
Merge pull request #4856 from hincupetru/3692-hashtags-inside-markdown-link

Check if the hashtag is a link in function .hashtagify
Add filters to notifications controller
Port aspect membership dropdown and hovercards
Port notifications to Bootstrap
Merge pull request #4814 from svbergerem/notifications-bootstrap-port

[WIP] Port notifications to Bootstrap and add filters, port hovercards
Add separator between days, don't display grey zero
Merge pull request #4867 from svbergerem/polish-notifications-view

Add separator between days, don't display grey zero
Hovercards! Everywhere!
Merge pull request #4870 from svbergerem/activate-hovercards

Activate hovercards in SPV and conversations