Added PHP 7 check in installer and updater.

Till Brehm

2016-04-22 ebd0e986ed11f2a34fb58cdd33efbfab192083ad

 remoting_client/API-docs/sites_web_aliasdomain_update.html

@@ -47,6 +47,7 @@
<p class="margin"> ssl_organisation_unit&nbsp;&nbsp;(<span class="paratype">varchar(255)</span>)</p>
<p class="margin"> ssl_country&nbsp;&nbsp;(<span class="paratype">varchar(255)</span>)</p>
<p class="margin"> ssl_domain&nbsp;&nbsp;(<span class="paratype">varchar(255)</span>)</p>
<p class="margin"> ssl_key&nbsp;&nbsp;(<span class="paratype">mediumtext</span>)</p>
<p class="margin"> ssl_request&nbsp;&nbsp;(<span class="paratype">mediumtext</span>)</p>
<p class="margin"> ssl_cert&nbsp;&nbsp;(<span class="paratype">mediumtext</span>)</p>
<p class="margin"> ssl_bundle&nbsp;&nbsp;(<span class="paratype">mediumtext</span>)</p>