removed useless await call inside tomcat

jams-server/src/main/java/net/jami/jams/server/Server.java

...c/main/java/net/jami/jams/server/core/TomcatLauncher.java

...a/net/jami/jams/server/servlets/filters/WebAppFilter.java

.../java/net/jami/jams/server/servlets/web/LoginServlet.java

...java/net/jami/jams/server/startup/CryptoEngineLoader.java

jams-server/src/main/resources/webapp/css/aos.css

...er/src/main/resources/webapp/css/bootstrap-select.min.css

jams-server/src/main/resources/webapp/css/bootstrap.css

...server/src/main/resources/webapp/css/font-awesome.min.css

jams-server/src/main/resources/webapp/css/main.css

jams-server/src/main/resources/webapp/fonts/FontAwesome.otf

...r/src/main/resources/webapp/fonts/fontawesome-webfont.eot

...r/src/main/resources/webapp/fonts/fontawesome-webfont.svg

...r/src/main/resources/webapp/fonts/fontawesome-webfont.ttf

.../src/main/resources/webapp/fonts/fontawesome-webfont.woff

...src/main/resources/webapp/fonts/fontawesome-webfont.woff2

...-server/src/main/resources/webapp/images/add-user-img.svg

jams-server/src/main/resources/webapp/images/avatar.png

jams-server/src/main/resources/webapp/images/exclamation.svg

jams-server/src/main/resources/webapp/images/flags.png