We recently updated Review Board's CSS to have buttons prefer their

component class's style rather than the global button styles. This made

it apparent that all a elements in .djblets-c-config-forms forms were

styled with the blue link text color, including buttons. I noticed this

in Power Pack's entry in the extensions page, where the "Database",

"Configure" and "Disable" buttons all had the blue text.
This change fixes this by only applying the link text color to

non-button a elements in config forms.

Looked at the extensions admin page and saw the buttons on the Power

Pack entry looked correct.