Order properties alphabetically in the root POM

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Let -DskipITs skip the integration tests

The skipITs property is a failsafe-plugin property, but we use the
invoker-plugin to run our integration tests. But that difference is
not something everybody should care about.

Therefore, let's just DWIM it when somebody passes the skipITs
property.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Merge remote-tracking branch 'origin/skip-its'

This addresses http://trac.imagej.net/ticket/1949.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>