wrapped navigation content in container to not break out on larger resolution; wrapped powered-by button into its own container/row; updated project.version to 0.4.0

Author: JoernT

templates/page.html

@@ -137,7 +137,6 @@
                         <form class="navbar-form navbar-right form-group" role="search" action="search.html" method="GET">
                             <input type="text" name="q" class="search-query form-control"
                                    placeholder="Search Documentation"/>
-
                         </form>
                     </div>
                 </div>