Add (partially-) working categoryManager.

- Added Body-Parser.

src/frontend/categoryManager.eta.html

@@ -5,10 +5,41 @@
 	<!-- Create new category button -->
 	<div class="row">
 		<div class="col-12">
-			<a href="/settings/category/new" class="btn btn-primary">Create new category</a>
-		</div>	
+			<a href="/settings/category/new" class="btn btn-primary" data-bs-toggle="modal" data-bs-target="#createNewCategoryModal">Create new category</a>
+		</div>
 	</div>
-	
+
+	<!-- Modal -->
+	<div class="modal fade" id="createNewCategoryModal" tabindex="-1" aria-labelledby="createNewCategoryModal" aria-hidden="true">
+		<div class="modal-dialog">
+			<div class="modal-content">
+				<div class="modal-header">
+					<h1 class="modal-title fs-5" id="createNewCategoryModalLabel">Create a new category</h1>
+					<button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
+				</div>
+				<div class="modal-body">
+					<form method="post">
+						<div class="mb-3">
+							<label for="createNewCategoryModalName" class="form-label">Name</label>
+							<input type="text" class="form-control" id="createNewCategoryModalName" name="name" required />
+							<div id="createNewCategoryModalNameText" class="form-text">This name should be unqiue.</div>
+						</div>
+						<div class="mb-3">
+							<label for="createNewCategoryModalDescription" class="form-label">Description</label>
+							<input type="text" class="form-control" id="createNewCategoryModalDescription" name="description" />
+							<div id="createNewCategoryModalDescText" class="form-text">Optional</div>
+						</div>
+					
+				</div>
+				<div class="modal-footer">
+					<button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Close</button>
+					<button type="submit" class="btn btn-primary">Save changes</button>
+				</div>
+			</form>
+			</div>
+		</div>
+	</div>
+
 	<!-- Table with all categories -->
 	<table class="table">
 		<thead>
@@ -23,7 +54,8 @@
 			<tr>
 				<th scope="row"><%= user.id %></th>
 				<td><%= user.name %></td>
-				<td><%= user.description %></td>			</tr>
+				<td><%= user.description %></td>
+			</tr>
 			<% }) %>
 		</tbody>
 	</table>