[deployment] Minor improvements to deployment script

Imported From: http://groups.google.com/group/in-portal-dev/browse_thread/thread/f062592068029da0#

Current deployment script is already a major deployment time saver, but here are few things to make it even more efficient:

1. rebuild system section cache
2. refresh admin tree to display section changes (only when Deploy button is used from GUI)
3. reset mod-rewrite url cache

misc_deployment_script_changes_feat.patch

Related Tasks

INP-1239 - Getting issue details... STATUS