Fixed Toolbar: removing popup removes ui-page-header-fixed class

Fixes #6987
Fixes #6939
ok while this works and i suggested it i think i typed it with a parentheses in the wrong place :/ 
should be 
```
$(  "body>.ui-" + this.role + "-fixed" ).add( page.find( ".ui-" + this.options.role + "-fixed" ) ).not( this.element ).length > 0;
```
same for fullscreen checkbelow