RunConfiguration: added possibility to clone "Run" configuration

Active "Run" configuration can be clone together with arguments and
"Run Environment"

Change-Id: Iec1a4b0b0702957c30580098e916fe8e665f236e
Reviewed-by: Daniel Teske <daniel.teske@digia.com>
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>