mailu/webmails
Mildred Ki'Lya b7ece9f9b8 roundcube: fix host parametrization
Roundcube can be parametrized so it can take a different hostname than
'front' or 'imap' to connect to the mail servers through environment
variables. Unfortunately, this was not correct and in PHP a `||`
operator always returns a boolean. It did not work as expected.

Instead use the ternary operator `:?` that works in all cases.
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rainloop Switch to Python for rainloop startup script and fix
roundcube roundcube: fix host parametrization