GUACAMOLE-1594: Update all Java and JavaScript dependencies to latest compatible.

NOTE: Several WebPack plugins could not be updated as all plugins within
WebPack's "webpack-contrib" have dropped support for WebPack v4
entirely, but Closure Compiler only supports WebPack v4.

doc/licenses/guice-5.1.0/README

@@ -0,0 +1,8 @@
+Google Guice (https://github.com/google/guice)
+----------------------------------------------
+
+    Version: 5.1.0
+    From: 'Google Inc.' (http://www.google.com/)
+    License(s):
+        Apache v2.0
+

doc/licenses/guice-5.1.0/dep-coordinates.txt

@@ -0,0 +1,3 @@
+com.google.inject:guice:jar:5.1.0
+com.google.inject.extensions:guice-assistedinject:jar:5.1.0
+com.google.inject.extensions:guice-servlet:jar:5.1.0