Merging 0.9.13-incubating changes back to master.

doc/guacamole-example/pom.xml

doc/guacamole-playback-example/pom.xml

extensions/guacamole-auth-cas/pom.xml

.../guacamole-auth-cas/src/main/resources/guac-manifest.json

extensions/guacamole-auth-duo/pom.xml

.../guacamole-auth-duo/src/main/resources/guac-manifest.json

extensions/guacamole-auth-header/pom.xml

...acamole-auth-header/src/main/resources/guac-manifest.json

...camole-auth-jdbc/modules/guacamole-auth-jdbc-base/pom.xml

...camole-auth-jdbc/modules/guacamole-auth-jdbc-dist/pom.xml

...amole-auth-jdbc/modules/guacamole-auth-jdbc-mysql/pom.xml

...ole-auth-jdbc-mysql/src/main/resources/guac-manifest.json

...-auth-jdbc/modules/guacamole-auth-jdbc-postgresql/pom.xml

...uth-jdbc-postgresql/src/main/resources/guac-manifest.json

extensions/guacamole-auth-jdbc/pom.xml

extensions/guacamole-auth-ldap/pom.xml

...guacamole-auth-ldap/src/main/resources/guac-manifest.json

extensions/guacamole-auth-noauth/pom.xml

...acamole-auth-noauth/src/main/resources/guac-manifest.json

guacamole-common-js/pom.xml