User role additions and cosmetic header/footer work

Added new top-level permission for 'Can Delete All Items'
Added new way users could be associated with an aggregation 'Is Admin'
Implemented changes so aggregation admins and those with the top-level permissions can delete appropriate items
Modified the way the headers/footers work.
- Container div is now added in programming, and should NOT be included the header/footer html anymore
- Item header/footer is ONLY used for item views now
Sys admin trace route starts hidden, added bottom link for it
Merge branch 'master' of github.com:MarkVSullivan/SobekCM-Web-Application