[ANNOUNCE] %groups and %talk v2.6.0

[~rilfun-lidlen]

We will be releasing an over-the-air (OTA) update for %groups and %talk. This release improves navigation in Talk, fixes several navigation and unread bugs, and adds an alert showing when your ship has applied an OTA to either app.

- Adds a new interface for navigating to an existing DM from the "New DM" prompt in Talk
- Adds a banner informing the user that an OTA to Groups or Talk has occurred in the background
- Adds a progress spinner to the "Mark as Read" button in the Group Activity screen
- Adds progress spinners to the Group invite dialog ("Invite") and the Pending Members screen ("Cancel")    
- Adds version, hash, and source info to the main app context menu
- Fixes an issue where hoon syntax processing in Notebooks would throw an error
- Fixes Notebook references in Chat of excessive length
- Fixes an issue where clicking a reference to a Notebook would not navigate
- Fixes an issue where references to a Secret group would not appear if you are a member or invited
- Fixes an issue where the blue activity dot in the Groups sidebar would appear for events other than unread messages
- Fixes an issue where entering text into an Invite field in Groups and switching tabs would clear the field
- Fixes an issue where joining a new Group from a reference in a Chat channel would navigate to a blank page
- Fixes an issue in Find Groups where the input field wouldn't allow a pasted `@p`
- Fixes the copy in Find Groups to include cases where the searched-for ship is offline or unresponsive
- Fixes an issue where clicking "Leave Message" in Talk would navigate to a blank screen
- Adds behavior to join an unjoined Channel in a Group you are in when you are following a reference originating in that Channel
- Fixes an issue where Channel sorting in the Groups sidebar would not persist between Groups
- Fixes an issue where deleting the first reply in a threaded Chat message did not remove the "1 reply" indicator in the main Chat log
- Fixes an issue in Talk where threads in multi-DMs would show the DM's `@uv`
- Fixes issues with time correction with Chat messages
- Fixes an issue where refreshing the detail view of a Gallery item threw a crashing error
- Fixes an issue where threads and Channels were marked read by sending a message (not by reading the channel)
- Fixes an issue where sending a message to a Chat channel or thread would mark the channel as unread
- Fixes an issue where one would repeatedly need to accept a Group DM invitation
- Fixes an issue where one could send a Chat message even if the Send button is disabled

More details on GitHub: https://github.com/tloncorp/landscape-apps/releases/tag/v2.6.0

[~rilfun-lidlen]

Both apps have been released.

Base hashes:
%groups: 0vs.00vi9.h6fga.bf0tg.u1ifm.pqkb9.uihiu.h1vg2.td5qn.cfcak.n5mvl
%talk: 0vm.re785.tq37s.duuhf.chn8b.bgbtq.ttkg1.rlurv.htbhm.4rdbq.jc2cb