Fix alignment of "tracking" / "trackers" headers

Currently the "tracking" / "trackers" headers in the user page look rather out of place, especially considering the two buttons on the left:

I suggest the following modifications:

1)

``` diff
#page-sig-lookup .tracking h4, #page-user .tracking h4 {
display:table-cell;
vertical-align:bottom;
padding-bottom:6px;
- height:63px;
+ height:60px;
color:#707070;
font-weight:300
}
```

2)

``` diff
-.big-crypto-buttons .btn {
+.big-crypto-buttons .btn, .tracking .btn {
border-radius:30px;
padding:15px 5px
}
```

3)

``` diff

Locate the user-page markup containing the tracking and trackers headers and the CSS rules for #page-user .tracking h4 and .big-crypto-buttons .btn. Apply the three proposed alignment and button-class changes, then verify that the tracking controls match the supplied after screenshot and remain aligned with the buttons on the left.

Written by the indexing model from the issue text.