Plumage

- Remove legacy Google Analytics tracking code.
- Rename `GOOGLE_ANALYTICS_UNIVERSAL` option by `GOOGLE_ANALYTICS` and
`GOOGLE_ANALYTICS_UNIVERSAL_PROPERTY` by `GOOGLE_ANALYTICS_PROPERTY`.
- Set default `GOOGLE_ANALYTICS_PROPERTY` value to `"auto"`.
- Allow deactivation of zoom on article's images.
- Upgrade to Font Awesome 4.6.3.
- Upgrade to ImagesLoaded 4.1.0.
- Upgrade to Masonry 4.1.0.
- Upgrade to Magnific Popup 1.1.0.
- Upgrade to jQuery 2.2.4.
- Ditch `grabicon` in favor of the free [Favicon Finder
](https://icons.better-idea.org) web service.
- Rename `GRAB_ICONS` option to `FAVICON_LINKS`.
- Enable favicon fetching by default.
- Fallback on default external link icon if none found.
- Remove local copy of Tipue Search assets. Rely on CDNjs instead.

- Add option to bypass grabicon.com web service.
- Add static search based on Tipue Search.
- Add new `LINKS_WIDGET_NAME` and `SOCIAL_WIDGET_NAME` options to mirror
upcoming Pelican 3.7.
- Align Piwik and Google Analytics code to Pelican's `notmyidea` theme.
- Add support for newer Google Analytics Universal embed code, via new
`GOOGLE_ANALYTICS_UNIVERSAL` and `GOOGLE_ANALYTICS_UNIVERSAL_PROPERTY`
options.
- Upgrade to jQuery 2.1.4.
- Upgrade to Masonry 3.3.2.
- Remove `PDF_PROCESSOR` option now that plugin is out of core.

- Fix favicon rendering.

- Add support for piwik.
- Upgrade to jQuery 2.1.3.
- Upgrade to Masonry 3.3.0.
- Upgrade to fitvids 1.1.0.
- Upgrade to Magnific Popup 1.0.0.

- Allow grouping of projects.
- Add option to override disclaimer notice.
- Generate tags, categories and archives URLs depending on site
configuration.
- Sort out inactive projects to the bottom of the project list.
- Drop support of old browsers.
- Move from jQuery 1.x to 2.x.
- Use [latest Google Analytics
](https://developers.google.com/analytics/devguides/collection/upgrade/)
tracking code.
- Upgrade to Font Awesome 4.0.3.
- Upgrade to Masonry 3.1.2.
- Upgrade to ImagesLoaded 3.0.4.
- Upgrade to Magnific Popup 0.9.9.

- Add auto-zoom of images based on Magnific Popup.
- Let the content take the available width if there is no right or left
sidebars.
- Add an dynamic feed link in footer.
- Do not wrap code in code blocks.
- Fix code highlight for older Pelican versions.
- Escape and strip tags in all title attributes.
- Style ampersands for those using typogrify.