* Add Blogtrottr as newsletter provider
* Fixed absLangURL issue with sections in footer
* Add LaTeX support
Added katex scripts and css to scripts and header partials, respectively
* Replace CDN with local files for LaTex resources + Fix flag error
Signed-off-by: hossainemruz <hossainemruz@gmail.com>
Co-authored-by: Pablo Marcos <codebergflamingo@staplehorse.anonaddy.com>
Co-authored-by: Emruz Hossain <hossainemruz@gmail.com>
