* Fix failing build with missing color variable

* Add more element color variables

* Remove unused magnific popup styles from the theme
* More sensible link variables
* Do not depend on brand color pool variables, use element variables instead in partials

* Remove auto-color function, transform all the rest of the color var…

…iables as CSS variables

* Font size variables to be more precise and fail-proof digitoimistod…

…ude#91

* Fix conflicting duplicate CSS variable `var(--color-dropdown-toggle)`.

* Fix skip link color on focus

* Fix sub-navigation padding when toggled on keyboard
* CSS variablize nav-mobile
* Add CSS variables to desktop nav, add font-weights as vars
* Fix editor font paths
* More CPU friendly php watch
* Set figure widths for gutenberg
* Helper variables $font-sans and $font-serif
* Add _font-face for defining webfont files, clarify font-family

See [pull request digitoimistodude#89](digitoimistodude#89).

Project start scripts have been refactored completely same manner than in this [dudestack PR](digitoimistodude/dudestack#11).

- Add working WSL support, linked also to [windows-lemp-setup](https://github.com/digitoimistodude/windows-lemp-setup)
- Modularize bash scripts, add files as partials. From now on we need to edit files under bin/tasks. Only couple of files are different, for example sed commands for debian and macOS vary, that's why
- Beautiful formatting and instructions for the start script (header.sh, footer.sh)
- Prevent running directly with bash or sh to prevent possible issues with them
- Variable all the things - no need to search and replace stuff
- Fix typos
- Add checks for missing packages (WSL mainly)
- Add extra notifications that these scripts need Air-light and dev servers to work

* Fix color variable inside conditional

* CSS variables digitoimistodude#85

* Add default link within content styles
* Fix Gutenberg formatting

* Remove PHP 7.0 from unit tests

* Migrate from travis-ci.org to travis-ci.com
* Fix build, add escapes and missing npm package