Move room alias/id mapping logic from matrixService to modelService.

syweb/webclient/components/matrix/event-handler-service.js

syweb/webclient/components/matrix/matrix-filter.js

syweb/webclient/components/matrix/matrix-service.js

syweb/webclient/components/matrix/model-service.js

syweb/webclient/home/home-controller.js

syweb/webclient/room/room-controller.js

syweb/webclient/test/unit/filters.spec.js