deselect all columns and change the position of database graph btn
change show database graph btn name to relationship graph
show simple errors on exception
Merge branch 'issue_10_custom_design' of https://github.com/maheshpj/qbe into issue_10_custom_design
Merge branch 'issue_10_custom_design' into issue_10_views_refactor
+ CSRF changes
Conflicts:
	qbeapp/views.py
jquery CSRF implementation