Ensure that all system icons now come with an accompanying SVG file.
Any missing SVG files have been addressed, and to maintain this consistency,
a PHPUnit test has been implemented to validate the inclusion of SVG files
for any new icons.
@const is not a valid phpdoc tag and @var should be used to
document both classes properties and constants (no matter how
weird that may sound, heh).
Link to (draft right now) PHP-FIG:
https://github.com/php-fig/fig-standards/blob/master/proposed/phpdoc-tags.md#518-var
So, with this commit we are just replacing all uses by the correct
@var one. Note that the type is entirely optional, in fact I think
that there isn't much need of it for constants because it's obvious
for both humans and machines which the type is. But, as far as it's
also correct to specify it, we haven't modified that detail.
The only detail modified are the cases where the constant name was
specified in the phpdoc, that's not needed, hence, the names have
been removed from there when present (a couple of cases).
Andrew Nicols