Clean up certificate viewer in RTL mode.

Clean up certificate viewer in RTL mode.

This makes two improvements to the certificate viewer in RTL mode:
 1. All text is now right-aligned, even English text, for consistency
    and easy scanning.
 2. The certificate name no longer overlaps the dropdown arrow.

BUG=548156
Committed: https://crrev.com/1c62327db90915de73cecf256f06cffc567a0be1
Cr-Commit-Position: refs/heads/master@{#356464}

[newt (away), 2015-10-27 23:54:59]

newt@chromium.org changed reviewers:
+ tedchoc@chromium.org

[newt (away), 2015-10-27 23:55:00]

PTAL

[newt (away), 2015-10-27 23:55:39]

Before/after screenshots are on the bug:
https://code.google.com/p/chromium/issues/detail?id=548156#c4

[Ted C, 2015-10-28 00:02:46]

lgtm

[newt (away), 2015-10-28 00:03:06]

The CQ bit was checked by newt@chromium.org

[commit-bot: I haz the power, 2015-10-28 00:05:32]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1409023005/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1409023005/1

[commit-bot: I haz the power, 2015-10-28 00:55:15]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-10-28 00:56:03]

Patchset 1 (id:??) landed as
https://crrev.com/1c62327db90915de73cecf256f06cffc567a0be1
Cr-Commit-Position: refs/heads/master@{#356464}