server: don't wait anymore for libervia app to be fully started: following change in backend, libervia app are started and the loading workflow continue immediately, the proxy is created only when the app is known to be actually started (through the `application_started` signal or a flag received when starting the application). This avoid stopping the loading of website for a long time, or breaking when a timeout is reached.

syntax: glob
*.pyc
*.pyv
*.swp
*.swo
*.js
tags
twistd.log
twistd.pid
sat.egg-info
*.un~
dist
MANIFEST
*.sh
build/
Session.vim
ctags_links/
html/