* add project showcase layout, set `view = 2` in `projects.md` to use
* revert card view to use resized images rather than cropped images
* fix project filters for tags with non-ASCII (i18n) characters
* add single column wide layout for project widget, to use set
`widget_layout` in `projects.md`
* add `flip_alt_rows` widget option to flip alternate rows in showcase
mode
* `url_` link buttons can now be added for projects
* all link buttons now appear in page header rather than under a 'links'
section within the page
* Markdown slides can now be linked from any page by using new `slides`
option
* Isotope JS is now only activated when required (i.e. when using card
view or when filters are defined)
* `links` translation removed from i18n
* consolidate talk, pub., and new project links files into new single
`page_links.html` for all pages
* move project widget layouts to their own files
Close#764Close#785Close#776Close#645Close#326
BREAKING CHANGE:
CSS class names of project tags are now prefixed with `js-id-` to
namespace them and prevent clashes with existing CSS classes.
Migrate any filter `tag`s in `projects.md` that are prefixed `.` to the
new `.js-id-` prefix.
George Cushen