Make doc for password more explicit, group options logically (#1765)

It may be obvious to some, but I think there's some value in making it more explicit that the password required here is for the *remote* shadowsocks server. Furthermore, I would suggest moving the password in the form closer to the remove server info.

net/shadowsocks/src/opnsense/mvc/app/controllers/OPNsense/Shadowsocks/forms/local.xml

@@ -17,6 +17,12 @@
         <type>text</type>
         <help>Port of the remote server.</help>
     </field>
+    <field>
+        <id>local.password</id>
+        <label>Password</label>
+        <type>text</type>
+        <help>Password to authenticate against the remote server.</help>
+    </field>
     <field>
         <id>local.localaddress</id>
         <label>Local Address</label>
@@ -29,12 +35,6 @@
         <type>text</type>
         <help>The local port of the daemon, default is fine.</help>
     </field>
-    <field>
-        <id>local.password</id>
-        <label>Password</label>
-        <type>text</type>
-        <help>Password to authenticate against the server.</help>
-    </field>
     <field>
         <id>local.cipher</id>
         <label>Cipher</label>