Increases the queue size for the PacketLoggingServiceImpl.

Facebook disabled their XMPP API.
See also: https://developers.facebook.com/docs/chat

See also #227

Add .gitattributes to prevent future EOL problems

Neither the IM nor the server stored account info capabilities of the
account are related to the presence capabilities. Add the support to
the provider even if presence is disabled.

Closes #215

Signed-off-by: Etienne CHAMPETIER <champetier.etienne@gmail.com>

Cleanup jitsi-certificate pom (use jitsi-universe version)

 Converts CRLF line endings to LF, as suggested by @champtar.

 The conversion was done with the script provided by @champtar on a
 linux
 machine:
 find -name '*.java' | xargs file | grep 'CRLF, LF' | cut -d ':' -f1 |
 xargs -n1 dos2unix

Adds HealthCheck IQ.

Signed-off-by: Etienne CHAMPETIER <champetier.etienne@gmail.com>

Program name prepending for log formatter

Directimage fix

* URLs of the form https://my.example.com:12345/abc/def/file.jpg were
not replaced somehow
* simply changed the URL_PATTERN 

* URL doesn't necessarily start with 'www'

Implemented program name property loading from logging.properties file and prepending it to each log message in case of existence

Fix TreeSet's Comparator in Jabber Presence class

This fixes the Presence TreeSet's Comparator. If the comparator can't
determine a greater or less than relationship, it will sort by the name
of the resources lexicographically.
A (mathematical) set is a collection of distinct objects. A TreeSet's
compare function determines relation of two objects. It also determines
equality and since this is a Set it would effectively replace the old
one in the set, if the function returns 0. This method wasn't fully
equals consistent, meaning different objects were deemed equal by the
comparator. That lead to an inconsistency in the representation of
presence objects and resources that contact has connected. The resources
not represented in this TreeSet would no longer be able to let the
contact appear as Online.

Introduce SmackInteroperabilityLayer for abstracting different Smack implementations (3 and 4)