Signal Desktop: v1.11.0-beta.1 Release

Feature: Receive contact (#2349, #2359)

Fixed: Sometimes clicks on quoted message wouldn't work (#2350)

Fixed: In dark theme, it was hard to see a message's triple-dot menu on hover - thanks @PunkChameleon (#2334)

Fixed: Unsupported image and video types were missing from media pane (#2351)

Fixed: On small screens, the media lightbox view would show media off-screen (#2351)

Notification improvements - Remove all on remote read, on focus, on exit - Show multi-message notifications like '5 new messages' - Disappearing message contents are not displayed in notifications on macOS

Media Gallery: A number of small visual fixes (#2351)

Emoji pane: Can now dismiss it by pressing escape key - thanks @tommypacker (#2354, #2357)

Update translations (#2328, #2352)

Dev: - Windows 7: Use Electron-native notifications (#2338, #2330) - Improve Logging For Disappearing Messages (#2332) - Prettier: Continue expanding its coverage of app (#2339, #2324, #2320) - Document Translations Setup + Remove Unused Strings (#2329) - Make Protocol Buffers available to commonjs code (#2347) - Build updates: remove unused commands and assets (#2318) - Document Windows 7 Developer Setup (#2321) - Update README copyright year to 2018 - thanks @IOAyman (#2279)