feat: Displaying statistics

composer.json

composer.lock

lib/stats/Templates.php

lib/stats/Utils.php

themes/elixir/default/includes/footer-full.php

themes/elixir/default/includes/footer.php

themes/elixir/default/includes/header-full.php

themes/elixir/proxystatistics/detail-tpl.php

themes/elixir/proxystatistics/index-tpl.php

themes/elixir/proxystatistics/loginsDashboard-tpl.php

themes/elixir/proxystatistics/providers-tpl.php

themes/elixir/proxystatistics/summary-tpl.php

themes/elixir/proxystatistics/timeRange-tpl.php

www/detail.php

www/identityProviders.php

www/res/css/jquery-ui.min.css

www/res/css/stats.css

www/res/js/charts.js

www/res/js/jquery-3.1.1.min.js

www/res/js/jquery-ui.min.js