cleaned imports
[JBIDE-15259] trimming git url before using/validating it
[JBIDE-10939] added "New/Edit Connection" to OS Explorer context menu
[JBIDE-15161] warn user when embedding unsupported cartridge/application
TOOLSDOC-376: Remove obsolete OpenShift Tools reference guide
[JBIDE-15280] bump used parent pom to 4.2.0.Alpha1
JBIDE-15205 -  OpenShift menu contribution issue