hterm 1.26, nassh 0.8.24.2: Add user-css pref

* Fix ordering of some existing preferences.
* Add a 'user-css' preference, which will load a user-defined css file (by url)
  into the terminal document.  This could be used to load a web font, or to
  style the terminal in perverse ways.

Change-Id: I01227bf98b92c780af6c2ae460e7ea038096608b
Reviewed-on: https://chromium-review.googlesource.com/182903
Reviewed-by: Toni Barzic <tbarzic@chromium.org>
Tested-by: Robert Ginda <rginda@chromium.org>
hterm: Add wide character support.

BUG=chromium:212558
TEST=Run all unit tests.
TEST=Edit files that contain wide characters in Secure Shell and verify that
everything works as expected.

Change-Id: I590f5e68531e9950650ae9b374b2452c6f5872a5
Reviewed-on: https://chromium-review.googlesource.com/182264
Reviewed-by: Robert Ginda <rginda@chromium.org>
Tested-by: Robert Ginda <rginda@chromium.org>
hterm 1.27/nassh 0.8.25.1, manifest and changelogs

* Update manifest and changelogs for fullwidth changes.

Change-Id: I657cd20d3a470c6bee34267cb3e37cafb6931f71
Reviewed-on: https://chromium-review.googlesource.com/184190
Reviewed-by: Robert Ginda <rginda@chromium.org>
Tested-by: Robert Ginda <rginda@chromium.org>