remove unneeded comments, add dummy favicon

Merge branch 'master' of https://github.com/mmistakes/minimal-mistakes

Added article:author used by Pinterest (#2670)

Strip trailing whitespace in seo_description (#2542)

Use relative_url and absolute_url where possible (#2387)

* Use relative_url and absolute_url where possible

Drops the `contains "://"` check, adopt Jekyll 3.7
Ref: https://github.com/mmistakes/minimal-mistakes/pull/2385#issuecomment-579882236

* One more unneeded {% assign %}

* Remove one more assign as noted by mmistakes

* Consolidate 4 more captures

* Consolidate an extra assign on "active" class

Fix wrong newline concatenation in SEO description, resolves #2354 (#2368)

Close #2354 

Fixed page.excerpt to seo_description (#2326)

Fix `site.url` in Organization/Person JSON-LD schema

Close #1906

Harmonize `site.url` for Organization JSON-LD schema

Fix default site.author in seo.html (#2230)

assign canonical directly if custom value exists (#2021)

Change remaining schema.org markup to `https` (#1978)

Merge branch 'master' of https://github.com/mmistakes/minimal-mistakes

Include a default title_separator (#1701)

The current code prevented any separator being included when site.title_separator was unset.

Merge branch 'master' of https://github.com/mmistakes/minimal-mistakes

fix typo in seo template (#1687)

naver-site-verification to naver_site_verification

Fix merge conflicts

Replace `|` with HTML entity when used as title separator

ref: #760, #1506

Remove extra spaces after :

Fix jsonify name in seo.html application/ld+json script (#1485)