Multiselecting contacts should be efficient enough for such rare action

Its impossible to get connected by accident without TLS. Connecting unencrypted is now a feature for developers. So showing a icon that reflects transport encryption seems not useful anymore.

We still show TLS information in the Server Info window

SSL -> TLS

Fixes #10164.

Otherwise the cert is only available after a restart

Fixes #10160

On account creation use the passwords module to store the password correctly

On Windows we ship compiled files

- Auto enable all plugins in the base folder, this allows package
maintainers to ship plugins

- Give plugins in the user folder priority over plugins in the base
folder

- Remove some unused dirs to reduce the size of the installation
- Add some needed executables

This is no problem because the signal is not emited if the platform
does not support it

Fixes #10152

The script has been moved to gajim-plugins repo.