Mkdocs-material

* Reverted --dev-addr flag removal from Dockerfile

* Added Catalan translations
* Fixed incorrect margins for buttons in Firefox and Safari
* Replaced package manager yarn with npm 5.6
* Reverted GitHub stars rounding method
* Removed --dev-addr flag from Dockerfile for Windows compatibility

* Added Vietnamese translations

* Added Arabic translations
* Fixed incorrect rounding of amount of GitHub stars
* Fixed double-layered borders for tables

* Added ability to override Disqus integration using metadata
* Fixed 690: Duplicate slashes in source file URLs
* Fixed 696: Active page highlight not working with default palette
* Adjusted German translations

* Moved default search configuration to default translation (English)
* Added support to automatically set text direction from translation
* Added support to disable search stop word filter in translation
* Added support to disable search trimmer in translation
* Added Persian translations
* Fixed support for Polish search
* Fixed disappearing GitHub, GitLab and Bitbucket repository icons