Make Items with mods equippable (#11)

Changes:
 + Items that can influence you stats are equippable
 + only equipped items influence your stats
 + Armor now influences your stats
 + move mods into a partial for easier changes

templates/sheets/partial/mod.hbs

@@ -0,0 +1,53 @@
+<table>
+	<thead>
+		<tr>
+			<th>Mods</th>
+			<th></th>
+			<th></th>
+			<th><button class="add-mod">+</button></th>
+		</tr>
+	</thead>
+	<tbody>
+		{{#each mods as |mod modId|}}
+			<tr>
+				<td>
+					<select class="select-mod-type" name="data.mods.{{modId}}.type" data-type="String">
+						{{#select mod.type}}
+							<option value="attribute">{{localize "midgard5.attribute"}}</option>
+							<option value="stat">{{localize "midgard5.bonus"}}</option>
+							<option value="skill">{{localize "midgard5.skill"}}</option>
+						{{/select}}
+					</select>
+				</td>
+
+				<td>
+					<select class="select-id" name="data.mods.{{modId}}.id" data-type="String">
+						{{#select mod.id}}
+							<option value="">{{localize "midgard5.no-skill"}}</option>
+							{{#each (lookup ../calc.mods modId) as |name key|}}
+								<option value="{{key}}">{{name}}</option>
+							{{/each}}
+						{{/select}}
+					</select>
+				</td>
+
+				<td>
+					<select class="select-mod-operation" name="data.mods.{{modId}}.operation" data-type="String">
+						{{#select mod.operation}}
+							{{#if (eq mod.type "attribute")}}
+								<option value="add100">{{localize "midgard5.mod-operation-add100"}}</option>
+							{{/if}}
+							<option value="add">{{localize "midgard5.mod-operation-add"}}</option>
+							<option value="set">{{localize "midgard5.mod-operation-set"}}</option>
+							<option value="fixed">{{localize "midgard5.mod-operation-fixed"}}</option>
+						{{/select}}
+					</select>
+				</td>
+
+				<td>
+					<input name="data.mods.{{modId}}.value" type="text" value="{{mod.value}}" data-dtype="Number" />
+				</td>
+			</tr>
+		{{/each}}
+	</tbody>
+</table>