refactor: data structs for template + method

enclosing rooms.Room into roomTableData, with methods to be used in
tempalte to get other template related derived data structures

routes/templates/tableTemplates.gohtml

@@ -65,13 +65,14 @@
 {{end}}
 
 <h2>Now for a person</h2>
+<p>expected to be called with personData</p>
 {{ define "personBlocks"  }}
 
 <div class="person-bricks "
      id="person-{{.Index}}"
      style="--i: {{ .Index }}"
      >
-  {{ range (bricksForPerson .) }}
+  {{ range .BricksForPerson }}
   {{ template "brick"  .  }}
   {{ end }}
   <p>{{ .Name }}</p>
@@ -81,8 +82,8 @@
 
 
 <h2>And now i'll want to get all persons for a room</h2>
+<p>expected be called with room *roomTableData</p>
   {{ define "roomPeople"  }}
-  {{ with  (personsFromRoom .)}}
   <div
     class="circle-container relative"
     style="--tan: {{ .Tangens }};  --m: {{ .Total }};"
@@ -91,5 +92,4 @@
     {{ template "personBlocks" . }}
     {{ end }}
   </div>
-  {{ end }}
   {{end}}