update to latest jekyll-fdroid

jekyll-fdroid!68 (merged) jekyll-fdroid!69 (merged) jekyll-fdroid!70 (merged) jekyll-fdroid!71 (merged) jekyll-fdroid!72 (merged) jekyll-fdroid!73 (merged) jekyll-fdroid!74 (merged)

@danialbehzadi @TheLastProject @proletarius101 FYI I had forgotten that jekyll-fdroid changes have to be manually included in fdroid-website. This includes a bunch of recent changes, including some that you were following.