Issue #71. Replace placeholder hints with default values for netmask and dns fields

code/html/index.html

@@ -532,12 +532,12 @@
                     <div class="pure-u-md-5-6 pure-u-3-4 hint">Set when using a static IP</div>
 
                     <label class="pure-u-md-1-6 pure-u-1-4" for="mask">Network Mask</label>
-                    <input class="pure-u-md-5-6 pure-u-3-4" name="mask" type="text" value="" size="15" tabindex="0" placeholder="255.255.255.0" />
+                    <input class="pure-u-md-5-6 pure-u-3-4" name="mask" type="text" value="255.255.255.0" size="15" tabindex="0" />
                     <div class="pure-u-md-1-6 pure-u-1-4"></div>
                     <div class="pure-u-md-5-6 pure-u-3-4 hint">Usually 255.255.255.0 for /24 networks</div>
 
                     <label class="pure-u-md-1-6 pure-u-1-4" for="dns">DNS IP</label>
-                    <input class="pure-u-md-5-6 pure-u-3-4" name="dns" type="text" value="" size="15" tabindex="0" placeholder="8.8.8.8" />
+                    <input class="pure-u-md-5-6 pure-u-3-4" name="dns" type="text" value="8.8.8.8" size="15" tabindex="0" />
                     <div class="pure-u-md-1-6 pure-u-1-4"></div>
                     <div class="pure-u-md-5-6 pure-u-3-4 hint">Set the Domain Name Server IP to use when using a static IP</div>