JBIDE-16650 : Switch to m2e profile management from m2e 1.5M6

Signed-off-by: Fred Bricon <fbricon@gmail.com>
JBIDE-16791 - Add Arquillian XML editor
Update parent pom to 4.2.0.Beta1
Updating component version to 1.1.1-SNAPSHOT
Updating parent pom to 4.2.0.Beta2
delete .project in root to be easier to import

Eclipse will stop looking for projects when finding a .project thus .project in root is more annoying than having value. You can enable recursive search but then you end up with two projects contributing the same files.
JBIDE-16855 - arquillian editor fails on blank or invalid file