Migrating analytics.js to gtag.js as Google recommends.

Fixing hover background color for #contact-submit button in assets/css/style.css

This reverts commit 39253d7bc9.

i18n for navigation items (fixes #107)

Fixed misspellings of 'analytics'

Spelling mistake fix

fix problem with bootstrap.min.js.map

Add gitpod config

this commit adds support for Gitpod.io, a free automated
dev environment that makes contributing and generally working on GitHub
projects much easier. It allows anyone to start a ready-to-code dev
environment for any branch, issue and pull request with a single click.

update link for docs

Add id for cta section.

Add a / to href for HTML compliance

Correct a problem when using less than 3 blog article

In this case, the author is (badly) displayed. This patch hard limits blog posts to blog section.

create support for custom css