add password to user registration and remove file copies from build dir

taskmanager/templates/register.html

@@ -26,6 +26,10 @@
 					<label for="contact">Contact:</label>
 					<input type="text" name="contact" id="contact" required />
 				</div>
+				<div class="form-input">
+					<label for="password">Password:</label>
+					<input type="password" name="password" placeholder="optional" id="password"/>
+				</div>
 				<div class="btn-wrap">
 					<button class="btn">Submit</button>
 				</div>