update panel
update README
add hadoop panel and change logo for nctu.
fix create master error when no container.
fix create master error when no container.
update README
update README
update init_script.template
update task count
fix init_script.py
update init_script.py
Merge branch 'nctu' of https://github.com/fajoy/horizon into dev

Conflicts:
	custom/hadoop/templates/hadoop/cloud-config/files/init_script.py
	custom/hadoop/templates/hadoop/cloud-config/init_script.template
	custom/status/urls.py
	custom/status/views.py
update
update help text,and add user script step.