Conflicts:
	src/java/org/jivesoftware/openfire/XMPPServer.java
	src/java/org/jivesoftware/openfire/net/SASLAuthentication.java
	src/java/org/jivesoftware/openfire/net/ServerStanzaHandler.java
	src/java/org/jivesoftware/openfire/session/LocalClientSession.java
	src/java/org/jivesoftware/util/CertificateManager.java
	src/web/WEB-INF/admin.tld

Denote master version as 4.0.0 alpha

Also be more correct when reading the "xml:lang" attribute and remove superfluous whitespaces.

Fixes OF-977

Remove support for Legacy date/time (XEP-0090 and XEP-0091).

Delete web.xml.startup.servlet

Update admin.tld to use the latest taglib version.

Delete unused classes

Replaced c2s and s2s config pages, removed ssl-config. Made all i18n files have the same line-ending.

OF-976 Language is not properly set in HttpSession

Language info should be in the Session, not in the Connection

Remove methods, which are both deprecated and unused.

Fix NPE when handling routing failures

Simplify and shorten pubsub message id

Initially, I added a connection type 'admin' that was somewhat abstract. This
poses a practical issue: there's no instantiating an abstract type. As it is
hardly used, it should be removed.

This commit adds ConnectionListener and -Configuration for the webadmin panel.
This required some properties to be optional (where they were not).

This commit (which is compilable, but breaks some important
functionality - work in progess) aims to centralize the configuration
for connections. "Connections" are used in a broad sense here, and
includes socket-based (TLS and legacy-mode SSL) client connections,
BOSH-based client connections, component connections, connectionmanager
(multiplexer) connections, but also connections to the admin panel.