[ZcF-general] ZecWallet April Update

[adityapk]

There were 4 releases of ZecWallet last month, mostly small bugfixes. Here's the consolidated release notes:

- Fix an issue where the direct connection from Android to desktop wouldn't work
- Fix the autoupdate notification
- Fix signature verification instructions (Thanks [@rex4539](https://github.com/rex4539))
- Fix an issue where sometimes Android would fail to connect to the desktop
- Fix the name "ZecWallet" in the mobile UI
- Force light mode on Mac since the dark mode still seems to be having problems
- Fix an issue with URI parsing on the desktop that was preventing some merchant URIs from being accepted
- Fix an access violation caused by incorrect socket closure
- Improve random password generation
- Show a warning on the balances page if node is still syncing
- Add a --conf command line argument to override which zcash.conf to load
- Fix some memory access violations