Accessibility fix for form input labels

I ran the Tota11y plugin and it generated "Input is missing a label" warnings. This is a quick fix.

_includes/contact.html

@@ -14,28 +14,28 @@
                     <form name="sentMessage" id="contactForm" novalidate>
                         <div class="row control-group">
                             <div class="form-group col-xs-12 floating-label-form-group controls">
-                                <label>Name</label>
+                                <label for="name">Name</label>
                                 <input type="text" class="form-control" placeholder="Name" id="name" required data-validation-required-message="Please enter your name.">
                                 <p class="help-block text-danger"></p>
                             </div>
                         </div>
                         <div class="row control-group">
                             <div class="form-group col-xs-12 floating-label-form-group controls">
-                                <label>Email Address</label>
+                                <label for="email">Email Address</label>
                                 <input type="email" class="form-control" placeholder="Email Address" id="email" required data-validation-required-message="Please enter your email address.">
                                 <p class="help-block text-danger"></p>
                             </div>
                         </div>
                         <div class="row control-group">
                             <div class="form-group col-xs-12 floating-label-form-group controls">
-                                <label>Phone Number</label>
+                                <label for="phone">Phone Number</label>
                                 <input type="tel" class="form-control" placeholder="Phone Number" id="phone" required data-validation-required-message="Please enter your phone number.">
                                 <p class="help-block text-danger"></p>
                             </div>
                         </div>
                         <div class="row control-group">
                             <div class="form-group col-xs-12 floating-label-form-group controls">
-                                <label>Message</label>
+                                <label for="message">Message</label>
                                 <textarea rows="5" class="form-control" placeholder="Message" id="message" required data-validation-required-message="Please enter a message."></textarea>
                                 <p class="help-block text-danger"></p>
                             </div>