NullPointerException in RoutingTableImpl.

Allows dynamic setting of disco info handler and disco items handler …

OF-954: Cleanup MUC rooms for defunct node

OF-462 PEP should process IQ-gets that have no 'to' attribute.

Fix unicode read on input

In the current read scheme for Openfire, it is possible that due
to variable width encoding that we sometimes only create a
string with a partial character.

This breaks the message text and causes encoding issues when read.

This change modifies the way the characters are
read to use an bytearrayoutputstream and
only do the string conversion once.

Since we only do the string creation once after the full
buffer is read, we no longer have encoding
issues with broken unicode characters.

In #routeToComponent, it is first checked if the component is being hosted in the local JVM. If it was not found, then all nodes in the ComponentsCache are checked to find if the component is hosted by one of those. In this process, the local routing table is again searched for the component, because it may have been added after the previous check. However, after this search, there is no null check done for the searched route. This results in an NPE when the component was not found locally and the #process(packet) method is called on the object. 

This also prevents the code from searching other nodes that may have been in the nodes set. Added a null check to prevent this scenario.

This way, plugins can swap in and out the handler.

XEP-0016 error messages should set correct from attribute (the sender).

See XEP-0016, example 50.

Patch submitted by community member lukzie.

OF-1063: Prevent TimerThread from exiting

Do not allow TimerThread to exit when the server becomes heavily loaded,
preferring instead to use the caller's thread to execute a scheduled
task when needed. This may result in a temporary slowdown, but is better
than a hard failure which requires a restart of the server.

OF-1057: Upgrade Jetty to 9.2.14

This commit moves jetty 9.2.9 to 9.2.14, which currently is the
latest release of it 9.2 branch.

OF-1056: Redirect commons logging over slf4j properly.

OF-1045: Fix NPE in cluster info page

Instead of using our proprietary commons logging wrapper for slf4j, use
the one provided by slf4j. Not only does is reduce code, it also does a
better job logging things (using the correct log category).

The jcl-over-slf4j.jar is a drop-in replacement for commons-logging.jar
(for version 1.1.1 commons-logging - our copy was probably older).

OF-1054 IllegalStateException when destroying MUC room prevents unava…

OF-1051: Prevent ConcurrentModificationException

Improve certificate signatures with SHA-2 functions

Conflicts:
	src/java/org/jivesoftware/openfire/keystore/IdentityStore.java

Aberenguel certificate issues

Conflicts:
	src/java/org/jivesoftware/openfire/keystore/IdentityStore.java

IdentityStore.addSelfSignedDomainCertificate considers the certificate
validity in days, not in months.

OF-1049: Fixes for certificate management

Remove exclamation mark from Search button (OF-1055)

Ensure cluster listener is properly initialized (and destroyed).

The unmodifiable collection in the original code is not immutable: when
the original collection is modified, this is reflected (which can cause
problems in iterators created from the unmodifiable collection). This
commit creates a new collection to prevent this from happening.

OF-1053: Don't use apostrophe in i18n

OF-1046: Improve offline-storage usage