[#688] Adds page_heading and inner blocks to group templates
[#688] Adds page_heading and inner blocks to org templates
[#688] Adds page_heading and inner blocks to package templates
[#688] Adds page_heading and inner blocks to related templates
[#688] Adds page_heading and inner blocks to tag template
[#688] Adds page_heading and inner blocks to user templates
[#688] Simplifies modify org templates around the page_heading
[#688] Adds form blocks to confirm delete pages within groups and orgs
[#688] Adds page_heading blocks to login, logout and perform_reset
[#688] Adds a few more blocks to the group templates
[#688] Lot's of more blocks for the package templates
[#688] Adds a few more generic blocks to header
[#688] Adds loads more blocks around editing/adding dataset form
[#688] Moves endblock to correct position
[#688] Adds more blocks into some package snippets
[#688] Adds more blocks around dataset listings with search forms
[#688] Small logic fix in template
Merge branch '688-template-blocks'