There is no need to base the base container on ruby:latest. Pinned
version to 2.6.4.

Moved team_map job in gitlab ci yaml file to branch
gitlab_ci_setup_production_team_map.

Instead of pinning ruby version to 2.6.4 we use latest.

Entered some example team members to team yaml file.

Need to check syntax of gitlab ci yaml file.

Remove syntax error on yaml file.

There is a shorter notation for bash if-conditions.

Bash if-condition needs a semicolon for inline use.

Each new branch should build with latest dependencies.

Used a new ste of environment variable values in gitlab ci yaml file.

There is only master brunch providing gitlab ci yaml file. All feature
branches get a copy and build agains latest dependencies. Master builds
against fixed dependencies. Also use yaml-extensions in gitlab ci yaml file
to achieve DRY .

Merge branch '#4-create-jekyll-project-structure' of https://gitlab.hzdr.de/hifis/software.hifis.net into gitlab_ci_setup_production

Noticed some left-overs from the original design that were
commented out and partially not transferred over yet.
It is done now.

As a result the title image will now take up a lot less space
when displayed on a small screen.

(Issue #4)

This commit creates a basic Jekyll setup for a HIFIS website.
It already contains an adapted corporate design and all required
assets.

Support for small screen devices is included, although the
breakpoints are just taken over from the CD even if they seem
rather arbitrary.

The required javascript has been inlined since it boiled down to
half a line of code at one specific place. (c.f. the <button> in
_includes/header.html)

As a basic concept, most sites are supposed to be written in
Markdown, using HTML for enrichment. Pure HTML-only sites are
supported.

Known issue: Many linked sites are still missing including
	* Team
	* Imprint
	* Privacy
	* Contact
These should be added by future commits.