add 'sub-project/super-project' relation
date-range auto span and validation
Merge remote-tracking branch 'origin/min' into min
Make 'parent - child' project relationship more visible, Remove 'feature' section and merge into 'content' section; use 'content' section to report to front-end project page.
minor fix on admin menu and frontend search
propagation 'publish/draft' status from cv to cv poject and projects
 minor bug fixes