Modify footer to represent that this is the dev branch

- 2.2.3 -> 2.3-DEV

go/go/templates/layouts/footer.html

@@ -6,7 +6,7 @@
 	    <a href="http://srct.gmu.edu/">GMU<strong> SRCT</strong></a>. |
 			Read and contribute to our <a href="https://git.gmu.edu/srct/go/">source code</a>. |
 			Freely-licensed under <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache 2.0</a>. |
-			Go Version 2.2.3
+			Go Version 2.3-DEV
 		</span>
 	</div>
 
@@ -21,7 +21,7 @@
 			Freely-licensed under <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache 2.0</a>.
 		</div>
 		<div class="col-sm-4 text-muted">
-			Go Version 2.2.3
+			Go Version 2.3-DEV
 		</div>
 	</div>
 </footer>