GitLab

Move the Options, Permissions, Visit website, Launch, and
Reload links to be on the same line in the
chrome://extensions page, directly below the description (so
they are in the same place for all extensions in the list).

Also reword "Visit website" to be either "Details" or
"Developer website", depending on whether it will link to
the developer's website or the chrome web store.

Finally, tweak the css to give a bit more padding to the
description and make the version text grey.

----------------------------

NOTE: The reviewed version of this patch is at
https://codereview.chromium.org/540113002, but that one had the wrong
Base URL (whoops).

(TBRs are original reviewers)
TBR=dbeam@chromium.org
TBR=yoz@chromium.org

BUG=410895

Review URL: https://codereview.chromium.org/550443003

Cr-Commit-Position: refs/heads/master@{#293739}