Adding PropertyListener support to AuditManagerImpl

StringUtils: Simplify verbose/duplicate and obsolete code constructs

Replace deprecated JiveConstants.XMPP_DELAY_DATETIME_FORMAT usage

OF-868 update roster cache on userModified

Tests should retrieve resources from the classpath rather than files.

Delete ChannelInputStream.java.

Cleanup connection logging, etc.

Update protocol support documentation.

Modernize XMLProperties with Java NIO.2 File API

Delete URLUTF8Encoder.java in favor of java.net.URLEncoder.

Revert PR#300 (restore PluginClassLoader)

per discussion with core team

Also remove dependency for sun.security.provider.* package

- The 4 replace methods were nearly identical.
- Deprecate String utility, which has a simple one-liner equivalent in the JDK
- Use DatatypeConverter for byte[] to hex. It's less code and even 2-3 times faster than the previous method.

OF-881: Simplify connection close semantics

- Use AtomicReference instead of synchronized block
- Extend java.io.Closeable; document contract
- Consolidate close/state transition logic

URLUTF8Encoder is obsolete due to `java.net.URLEncoder.encode(str, "UTF-8")`

This package-private class is a) unused and b) redundant due to `java.nio.channels.Channels.newInputStream(ReadableByteChannel)`

ofmeet plugin version 0.2.3

Simplified build, removed classes folder in WEB-INF
Changed default value for voip gateway to false
Removed some redundant and duplicate jar file in jitsivideobridge lib
Removed tinder.jar and whack.jar which caused ComponentManagerFactory.getComponentManager() to fail with OF 3.11

Avoid recursion and synchronization issues

Update REST API Plugin to 1.1.7

Added: Provide the possibility to use a Custom Auth Filter
Fixed: Preflight request will be not blocked by Authentication
Added: Group names in ChatRoom Entity

with XMPPDateTimeFormat

- Update old XMPP RFCs to the new one (e.g. 6120)
- Remove the obsolete reference to XEP-0073 and replace it with XEP-0302
- Get rid of the basic/intermediate terms as they are no longer in use in XEP-0302. Use Core and Advanced instead.
- Add XEP-0160, XEP-0198, XEP-0202, XEP-0280
- Correct "Entity Time" to "Legacy Entity Time"
- Correct "Jabber Date and Time Profiles" to "XMPP Date and Time Profiles"

Revert "	Fix PluginClassloader not implement getResources Method"

	Fix PluginClassloader not implement getResources Method

RestAPI Plugin - Provide the possibility to use Custom Auth Filter

Now switchoff betweeen the authentication systems seems to work as
intended

These tests otherwise may throw FileNotFoundException and are harder to make them run.

Also delete TestUtils.java because it's not needed now anymore.

Reverting some changes made with PR #239. by enabling the custom socket factory.  Added the use of Comparator per http://docs.oracle.com/javase/8/docs/technotes/guides/jndi/jndi-ldap.html#pooling
  for connection pooling

Reverting some changes made with PR #239. by enabling the custom socket factory.  Added the use of Comparator per http://docs.oracle.com/javase/8/docs/technotes/guides/jndi/jndi-ldap.html#pooling
  for connection pooling

Added readtimeout and connect time out to getcontext