Add a .nick[data-nickhash] attribute so we can colorize nicks.

Not sure what colour scheme you might want in the master branch.

Example style:

```css
.type-1 .nick[data-nickhash="0" ] { color: #B58900; }
.type-1 .nick[data-nickhash="1" ] { color: #CB4B16; }
.type-1 .nick[data-nickhash="2" ] { color: #DC322f; }
.type-1 .nick[data-nickhash="3" ] { color: #D33682; }
.type-1 .nick[data-nickhash="4" ] { color: #6C71C4; }
.type-1 .nick[data-nickhash="5" ] { color: #268BD2; }
.type-1 .nick[data-nickhash="6" ] { color: #2AA198; }
.type-1 .nick[data-nickhash="7" ] { color: #859900; }
.type-1 .nick[data-nickhash="8" ] { color: #B58900; }
.type-1 .nick[data-nickhash="9" ] { color: #CB4B16; }
.type-1 .nick[data-nickhash="10"] { color: #DC322f; }
.type-1 .nick[data-nickhash="11"] { color: #D33682; }
.type-1 .nick[data-nickhash="12"] { color: #6C71C4; }
.type-1 .nick[data-nickhash="13"] { color: #268BD2; }
.type-1 .nick[data-nickhash="14"] { color: #2AA198; }
.type-1 .nick[data-nickhash="15"] { color: #859900; }
```

Taken from my theme branch (which turns the UI into DarkSolarized). https://github.com/Zren/quassel-webserver/commit/9af66954972dc6aa97cf584ce3566f255fc212e4

![](http://i.imgur.com/3v2xI8G.png)