Extend info for each file-commit

Full message and timestamp, as for the "main" commit.

quit.go

			{{ range $file := .Repo.Commit.Files false }}
			<tr class="file">
				<td class="file-name file-type-{{ $file.Type }}">{{ $file.Name }}</td>
				<td class="file-commit">{{ $file.Commit.Summary }}</td>
				<td class="file-date">{{ $file.Commit.Date.PrettyString }}</td>
				<td class="file-commit" title="{{ $file.Commit.Description }}">{{ $file.Commit.Summary }}</td>
				<td class="file-date" title="{{ $file.Commit.Date }}">{{ $file.Commit.Date.PrettyString }}</td>
			</tr>
			{{ end }}
		</table>