Fix the wording about reporting differences when mgmt versions differ

The messages "reporting/not reporting differences in the model when mgmt
versions are different" were swapped. Fixed that.
[AS7-6551] Add version 2.0 of jboss-as-config schema.  Also update existing configuration based on 1.4 to use 2.0.
AS7-6570 fixes for buiding on JDK7
 * upgrade javassist to support jdk7
 * upgrade & mockito & powermock to support jdk7
 * upgrade junit to 4.11 to gain test ordering support
 * fix test ordering