Upgraded Aesh runtime
JBIDE-18179: Using ShellHandle refactoring

Conflicts:
	plugins/org.jboss.tools.forge2.runtime/META-INF/MANIFEST.MF
JBIDE-18179: Updating height accordingly. Need fix on width
JBIDE-18179: Terminal size is now correctly calculated.

Thanks goes to Alexey Kazakov for providing the code to calculate the
font extend.
Removed unused code
Dispose graphics context to avoid memory leaking
JBIDE-18179: No horizontal scroll for TextViewer, automatic wrap at line length
Removed shell-api from MANIFEST.MF
JBIDE-18280: Upgraded to Forge 2.9.2.Final

Conflicts:
	plugins/org.jboss.tools.forge2.runtime/META-INF/MANIFEST.MF
JBIDE-18004: Created Wizard handler to open Forge wizards
JBIDE-18004: Using wizard title if specified
JBIDE-18004: Removed unused code
JBIDE-18004: Renamed command handler
Unsetting value in combo only if it does not exist
JBIDE-18004: Allowing pre-populated parameter values
Using constant for Package Explorer
Taking selection from Project Explorer and from Navigator View
JBIDE-18171: Remove the wizard plugin entirely