[JBIDE-15802] fix for git url text not revalidating wizard page 

Adds a modify listener to the Text widget for the git url.
[JBIDE-15799] filter installed plugins

Enables the installed plugins filter on the CordovaPluginSelectionPage
[JBIDE-15487] create a copy of content lists

Creates a filtered list of the original content lists to avoid
comodification.
[JBIDE-15793] Fix for multi plugin installation

Simplifies the version selection by using a ComboViewer instead of plain
Combo. This avoids the value carrying logic which was causing only the
last plugin selected to be considered selected.
Take the default filter into use

Default filters was not used unless launch configuration dialog was once
used. This fixes the issue by falling back to the default value if not
logcat filter values can be determined.
Merge branch 'master' into jbosstools-4.1.x
Merge branch 'jbosstools-4.1.x' into jbosstools-4.1.1.Beta1x