Adds uid parameter to modifyBody() and modifyHeader() and implements _replaceSection()
Implements methods that accept a parameter array instead of a view
Adds l-pos parameter to all list items to back/next navigation in detail view
Implements back/next navigation in stage client
Fixes missing modifyBody() and modifyHeader() changes
Merge pull request #743 from nsendetzky/master

Implements back/next navigation in stage client