DevX: Add another Matrix site to docker-compose (#3511)

* remove redis, since we dont use it

* update localhost TLS certificat to add *.othersite.m.localhost wildcard

* allow for federation

* Add services and config files for Matrix site othersite.m.localhost

* add element web instance app.othersite.m.localhost

* update README

* exclude synapse database for othersite.m.localhost

* linting

backend/dev_tls_local-ca.crt

@@ -1,19 +1,19 @@
 -----BEGIN CERTIFICATE-----
-MIIDGjCCAgKgAwIBAgIUGdiFHhH4KL2pqBjMQHQ+PVIkSV8wDQYJKoZIhvcNAQEL
-BQAwHjEcMBoGA1UEAwwTRWxlbWVudCBDYWxsIERldiBDQTAeFw0yNTA1MDUxMDMy
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-FGqd3R4cBia6r1WIXmpAzyu5RGP5Eou0TZlGkal96/bF0I7q/pKlL23Jt1BLPiQU
-KGKrAgMBAAGjUDBOMB0GA1UdDgQWBBQJqBjMu61c1p24txw/y+kv3D+V6DAfBgNV
-HSMEGDAWgBQJqBjMu61c1p24txw/y+kv3D+V6DAMBgNVHRMEBTADAQH/MA0GCSqG
-SIb3DQEBCwUAA4IBAQB8m2YfFGLugNt5vAAOvNxVqDA8c72yCVYr3CBCpmTIEY5Z
-d3qVGhG9//ux6+J8ntkSwd9nV5GJyYXHukCG1VavnAWolWdNF/WAllf0jhLuz7kD
-/cJnuI1By4tBsBmSz851i6HJ4t5k99Be+6GQVzi0e7zzfxTHZE4xP2J6Ox8QbPsP
-n0m76nIp/WbWaJqzvIIjJhmUUPPv+4wN+eOArgjiGLzptM2qTtGZtd0c9nS5gvep
-+mEbSUN9zkhAroZf80wf+hEvy+fJ94VbZ9QjTzTg7odZLrsXGIe8DaG63EYRQ25b
-W5iYBAreln5fGSt7qHsGfqwZibTEk/Lx3dydO1Kg
+MIIDGjCCAgKgAwIBAgIUbSbx+1UGptOTGefqEn7Zh3yoChIwDQYJKoZIhvcNAQEL
+BQAwHjEcMBoGA1UEAwwTRWxlbWVudCBDYWxsIERldiBDQTAeFw0yNTA5MjIxMjI3
+MzVaFw0zNTA5MjAxMjI3MzVaMB4xHDAaBgNVBAMME0VsZW1lbnQgQ2FsbCBEZXYg
+Q0EwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDHODfkrFsOkqCnXnTb
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+HSMEGDAWgBTXNfLAKVayGQda/JZLPszrpz6LVzAMBgNVHRMEBTADAQH/MA0GCSqG
+SIb3DQEBCwUAA4IBAQCvGfyopHHgZB+horGH6i/Xg41V+r4d0o092F1Lfr4vh86e
+XMakRw92vsyk/iWOnLPNPcpVWzPcvINaCs/bahgnGSOAnrA4jjcXqymyGIy/6xc5
+1EeZAxehiL9E5q4LQ841HDX0gps4ZzUO1BRYQcjG9Rdts83JO2ekkfHkZdNj2eQr
+KOrr92Na1/w+EQdo/T9Rs2ES623xKEOxPqb8d/rx5Z4DdeuGx1u+3AfS76Lpo4ni
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+7rKW/qDfEK9GUs0GWCs3+mJkNvOOxBwtMuQrL7ZF
 -----END CERTIFICATE-----