If PEP publish tries are repeatedly triggered by empty PEP updates, stop
attempting to publish after 3 tries. This should work around broken PEP
implementations in older ejabberd and OpenFire versions.

remove unused imports.

update bcprov-jdk15on to v1.52

cleared up some error messages in axolotl service and execute publishOwnDevicesWhenNeeded() only if processing our own jid

update minidns to v0.1.7

update roundedimageview to v2.2.0

make use of the archivesBaseName and
rename only 'zipaligned' release build.

introduce special iq type for internal timeouts. always use != result to check for error in callbacks