Fix public key wrap.

Css property `word-break: break-word;` doens't exists, replaced with `word-break: break-all;`.
But it's a third issue related to public key block wrap (previous two: #408, #433). Admin LTE theme not support long code texts, and inline css its a bad usage, need to add or class `.word-wrap` and add `phpci.css` file to this page, as related to #433, or wrap public key into `<pre>` element and public key will be display in one line with horizontal scroll, like in #408. What will be better?