fix(projects): close review authorization and error gaps

src/main/resources/templates/projects/form.html

@@ -5,11 +5,13 @@
 <main>
   <h1>Create Project</h1>
   <form method="post" th:action="@{/projects}" th:object="${projectForm}">
+    <p role="alert" th:if="${#fields.hasAnyErrors()}">Please correct the highlighted Project details.</p>
     <label for="name">Name</label><input id="name" th:field="*{name}" required maxlength="160">
     <p th:errors="*{name}"></p>
     <label for="description">Description</label><textarea id="description" th:field="*{description}"></textarea>
     <label for="startDate">Start date</label><input id="startDate" type="date" th:field="*{startDate}" required>
     <label for="endDate">End date</label><input id="endDate" type="date" th:field="*{endDate}" required>
+    <p th:errors="*{dateRangeValid}"></p>
     <label for="leader">Initial Leader user ID</label><input id="leader" type="number" min="1" th:field="*{initialLeaderUserId}" required>
     <p th:errors="*{initialLeaderUserId}"></p>
     <button type="submit">Create Project</button>