Merge branch 'hotfix/android-theme-color'
Updated syntax highlighting on old posts

- places where `lang="..."` were used were changed to `class="language-..."`
Merge branch 'hotfix/syntax-highlight'

Fixed syntax highlighting on old blog posts
Merge branch 'hotfix/syntax-highlight' into develop
Ensure "blog.html" redirects to just "blog"

- Reported by @samsonasik
Merge branch 'hotfix/blog-redirects' into develop