[JBIDE-15326] use mvn artifacts vs embedded jars
[JBIDE-15261] creating app with embedded cartridges + larger timeout

Now creating the app with embedded cartridges (was: adding cartridges to
the freshly created app). Also using specific, long timeout when
creating an app.
[JBIDE-15261] creating app with embedded cartridges + larger timeout

Now creating the app with embedded cartridges (was: adding cartridges to
the freshly created app). Also using specific, long timeout when
creating an app.

Conflicts:
	plugins/org.jboss.tools.openshift.express.client/.classpath
	plugins/org.jboss.tools.openshift.express.client/.gitignore
	plugins/org.jboss.tools.openshift.express.client/META-INF/MANIFEST.MF
	plugins/org.jboss.tools.openshift.express.client/build.properties
	plugins/org.jboss.tools.openshift.express.client/pom.xml
[JBIDE-15460] added groupId to maven-clean-plugin to prevent tycho:set-version failure
[JBIDE-15462] bumped to 2.6.0-SNAPSHOT
[JBIDE-14856] allow users to remove several connections at once
Initial Refactor
openshift reorg: fleshed out core.util
openshift reorg:  port-forwarding is all UI
openshift reorg:  missed one core util
openshift reorg:  move secure storage classes to core
openshift reorg:  moved markers to core plugin
openshift reorg:  removal of deprecated classes and changing imports
openshift reorg:  fixing imports in test cases
openshift reorg:  moving preferences
openshift reorg:  moving over connection model to core
openshift reorg: move behavior over
JBIDE-15496 near-final cleanup to ensure builds successfully
JBIDE-15496 forgot to add new class for handling server project UI,  also removed 4 constants in core which belonged in UI (related to the class that was added)
JBIDE-15496 small build error