Updates kotlin plugin and fabric tools version

[NEW] Spotlight search if no results found on subscriptions

[NEW] Add capability of adding and clearing reactions to messages

[FIX] Logout

[NEW] Add 'unread messages' marker

[IMPROVEMENT] Add ripple effect on recyclerview items

[FIX] Fix emoji parsing on quote markdown

[FIX] Behavior of messages with attachments/previews

[NEW] CAS login support.

Also, fix code indentation.

* Also added translation to pt-rBR/strings.xml
* Remove unnecessary log statements