Issue 207: Support keyboard shortcuts

git-svn-id: http://zaproxy.googlecode.com/svn/trunk@4219 0fcac13d-f916-6cb6-7431-acacdca54389
Updated add-ons for keyboard shortcut changes

git-svn-id: http://zaproxy.googlecode.com/svn/trunk@4220 0fcac13d-f916-6cb6-7431-acacdca54389
Updated plugnhack add-on for keyboard shortcut changes

git-svn-id: http://zaproxy.googlecode.com/svn/trunk@4221 0fcac13d-f916-6cb6-7431-acacdca54389