Views UI CSS Cleanup

Fixing tags. Thanks for filing this!

General:
Color hex values should follow Drupal coding standards (lowercase letters)
Change floats to inline-block where appropriate

In views-admin.theme.css
#edit-display-settings main should not have a margin top of 15px, rather the #edit-display-settings-top should have a margin bottom

#view-edit-form #edit-displays should have a bottom margin to separate the edit and preview areas and #views-preview-wrapper should not have 2 border styles, so we should remove the border-top 2px style

#views-live-preview cramping update preview button, needs more left margin

Patch with changes to clean up items from comment 3.

About half of that is fixing the case/length on hex colors, but there are a few real changes.

We have the before shots in #3, can we have some after?

Screenshots of changes.

CSS breaking Drupal\system\Tests\Common\HttpRequestTest? Hah.

Those fixes look good, and the screenshots look great!

#5: vdc-1840896-5.patch queued for re-testing.

Is it clean up everything? (or fixing bugs from #1806022)

few more:

e.g

shorthand

.views-admin .icon,
.views-admin .icon-text {
  background-attachment: scroll;
  background-image: url("../images/sprites.png");
  background-position: left top; /* LTR */
  background-repeat: no-repeat;
}

Remove unnecessary qqualified selectors

th.views-ui-name {
  width: 18%;
}

ul#views-display-menu-tabs {
  margin-right: 200px;
}

..etc.

@droplet, for those, you'd need to manually test each of those in all 3 themes. Feel free to open an issue.

These look pretty straight-forward.

Committed and pushed to 8.x. Thanks!