Minor improvements in dashboard.

If any particular count is zero. That particular row will not be displayed.
If there are no issues where release notes are not required - the entire section is not displayed.
If there are no issues with invalid CF - that row and sub rows will not be displayed.
UI beutification and cleanup.

Now the details are hidden by dafault.
Clicking on the link will display details of DONE / TODO - and NOT REQUIRED
Erroneous line is always visible if there are any errors.