Replace in-line styles in spoiler view with icons

Replace raster graphics on "Spoiler" view for card search with colored
icons from the icon font, remove inline styles
Fix z-indexing of links when using icon-bg
Update icons.css
Update icons.css
Update Netrunner iconfont to latest version
Responsive table view for search
Icon naming fixes
Prettier search form
Merge branch 'master' of https://github.com/MWDelaney/netrunnerdb into MWDelaney-master
active state
Merge branch 'MWDelaney-master'
Merge branch 'master' of https://github.com/Alsciende/netrunnerdb