Plonetheme.sunburst

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- Apply .portalMessage styling to reST admonitions
https://github.com/plone/plonetheme.sunburst/pull/4
[rpatterson]

- style reset on th for table.plain and IE9, fixes 11589
[maartenkling]

- more specific Sunburst CSS on content-core dd, fixes 11840
[maartenkling]

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- Style ajax-spinner rather than inserting kss-spinner in main_template.
[davisagli]

- Style fixes for new style of portlet manager buttons.
[vangheem]

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- fixes: Display menu falls under footer (see Events page) (IE7)
[maartenkling]

- fixes: Live search appears under content action menu (IE7)
[maartenkling]

- style ol/li in statictext portlet having omit border true
[maartenkling]

- Fixes: in overlays, and especially in reference browser,
label in an anchor link has a cursor pointer.
Improves navigation experience in reference browser widget.
[thomasdesvenain]

- Fixes: compare previous link margin with history records
is smaller.
[thomasdesvenain]

- Fixes and improvements on history popup with diff.
[thomasdesvenain]

- Move new CSS class generation into new function called ``getColumnClasses``
to let the old and deprecated one return column content CSS class only. This
is important to keep all previously customized main_templates working.
[saily]

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- Use sunburst_view to generate portal-column-one and portal-column-two
classes as it is already done for portal-column-content.
Fixes: https://dev.plone.org/ticket/12995
[saily]

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- For event view template, changed headerless table to headings and divs for better accessibility. See bug 13181
[hmharter]

- define class .breadcrumbSeparator, which is referred to in plone.app.layout
and plone.app.search, but wasn't in Sunburst. Set a color on it, because
the separator character was changed (see https://dev.plone.org/ticket/12904)
The color chosen is WCAG2.0 compliant in contrast.
[polyester]

- Set "display: block; font-weight:normal" on .formHelp in forms.css.dtml to
assure that field help displays well even if it is formatted as a span
inside the label for accessibility.
[smcmahon]

- Change form tab style selectors from 'content' to 'content-core' so form
tabs work in both content and overlays.
[davidjb]

- Fix vertical alignment of listing table cells when content type icons are
enabled.
[esteele]

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- Add selector for AT required field icon
[tom_gross]

- Use CSS :content selector to inject required icon instead of image
[tom_gross]