Add a unique secret token to install instructions

Failing to do so means that if you have multiple stringer installs on the same host, one password will grant you access to all of them.
Bump feedjira and loofah versions
Replace unprintable unicode character workaround with new loofah scrubber
Remove WIP
Add Victor to contact section
Update README.md
Update README.md
Use openssl for the random token
Merge pull request #311 from zigdon/patch-1

Add a unique secret token to install instructions
Add a simple feed edit view
Implement a feed update action
Add a flash message on successful update
Use PUT to update a feed
Copy: Update -> Save
Add groups for feeds in Fever API
Merge pull request #244 from gaynetdinov/groups-for-feeds-in-fever-api

A simple and quick way to have feed groups in fever clients.
Merge pull request #318 from Koronen/edit-feed-ui

Edit feed UI
Add ability to edit feed name, closes #319
Update translations
Fix code tags overflowing container, closes #315