Bug 426953 - UX: Dropdown menu items (including context menu) should show keyboard shortcuts if applicable

--Signed-off-by: Elijah El-Haddad <elijahe@ca.ibm.com>
Bug 427312 - Use symbols instead of letters for applicable keyboard shortcuts

--Signed-off-by: Elijah El-Haddad <elijahe@ca.ibm.com>