Merge pull request #1006 from notFloran/webui-hide-public-ip-if-not-defined

[WebUI] Hide public address if not available

glances/outputs/static/html/plugins/ip.html

-&nbsp;-&nbsp;<span class="title">IP</span>&nbsp;<span>{{ statsIp.address }}/{{ statsIp.maskCidr }}</span>&nbsp;<span class="title">Pub</span>&nbsp;<span>{{ statsIp.publicAddress }}</span>
+&nbsp;-&nbsp;<span class="title">IP</span>&nbsp;<span>{{ statsIp.address }}/{{ statsIp.maskCidr }}</span>&nbsp;<span ng-if="statsIp.publicAddress" class="title">Pub</span>&nbsp;<span>{{ statsIp.publicAddress }}</span>