Fixed a rare bug with incorrect posts' likes handling when user hits the "Like" or "Remove like" button.
Fixed incorrect links to Twitch and YouTube in the "External links" section in the Feed (they were mixed up).
Slightly updated the logic of sending notifications if post was liked to prevent handler's crashing if the notification sender is not loaded for some reason.
Temporarily disabled the posting form on the
wall.php page because it may work very incorrectly due to the lack of updates.
Changed colours of some buttons in the Feed.
Improved user experience with the buttons in the posting form.