Updated menus to work better with list item linking

Lots of changes made (almost a refactor <--- four letter word to me...
- Menu Items collection is now the "permanent" storage location for menu item for any day.  So, if i set Green Chile Chicken Enchiladas, Beans, and Rice as an item for a day, it will be stored as a Menu Item for later use.
- Linking menu items to items that can be added to a shopping list - This has been updated to be more reusable. So as you re-choose a menu item that's already got list items linked, it just shows up for you to use to build a shopping list as needed.
- Deleting menu items from a menu - changed to delete them only from the menu, and not from the database.
- Dashboard updated to pull today's menu item from the menu, and not the menu item list.

client/Dashboard/dashboard.html

@@ -41,9 +41,13 @@
                 <div class="card-content white-text">
                 <span class="card-title"><h4>{{todayDate}}</h4></span>
                 {{#each todayMenuItem}}
-                    <div class="row">
-                        <div class="col s12"><h4><i class="medium material-icons">local_dining</i> <span class="right">{{itemName}}</span></h4></div>
-                    </div>
+                    {{#each menuItems}}
+                    {{#if $eq todayDate serveDate}}
+                        <div class="row">
+                            <div class="col s12"><h4><i class="medium material-icons">local_dining</i> <span class="right">{{menuItemName}}</span></h4></div>
+                        </div>
+                    {{/if}}
+                    {{/each}}
                 {{else}}
                     <div class="row">
                         <div class="col s12"><h4><i class="medium material-icons">local_dining</i><span clas="right">No Menu Today</span></h4></div>
@@ -71,4 +75,4 @@
         </div>
         {{/if}}
     </div>
-</template>
+</template>