Server implementation. (#90)

* Server implementation.

- Share the content of a folder as a magnet file.
- Web interface with all data needed for sharing data.
- New configuration to add several servers
- Every time the content of the server folder is changed, the magnet
file will be generated again.

Signed-off-by: Antonio Navarro Perez <antnavper@gmail.com>

* Update dependencies

Signed-off-by: Antonio Navarro Perez <antnavper@gmail.com>

* Use boltdb piece completion storage.

Signed-off-by: Antonio Navarro Perez <antnavper@gmail.com>

templates/navbar.html

@@ -37,6 +37,16 @@
             <span class="nav-text">Routes</span>
           </a>
         </li>
+        {{if eq . "served-folders"}}
+        <li class="active">
+          {{else}}
+        <li>
+          {{end}}
+          <a class="sidenav-item-link" href="/servers">
+            <i class="mdi mdi-folder-upload-outline"></i>
+            <span class="nav-text">Served Folders</span>
+          </a>
+        </li>
         {{if eq . "logs"}}
         <li class="active">
           {{else}}
@@ -47,16 +57,6 @@
             <span class="nav-text">Logs</span>
           </a>
         </li>
-        <!-- {{if eq . "watched-folders"}}
-        <li class="active">
-          {{else}}
-        <li>
-          {{end}}
-          <a class="sidenav-item-link" href="/watched">
-            <i class="mdi mdi-folder-upload-outline"></i>
-            <span class="nav-text">Watched Folders</span>
-          </a>
-        </li> -->
       </ul>
 
     </div>