feat: Add npm dependencies and update vendor paths

- Add package.json dependencies: jquery, jquery-ui, moment, daterangepicker, wavesurfer.js, air-datepicker
- Create scripts/setup-vendor.js to copy npm packages to public/assets/vendor
- Update view templates to use vendor paths instead of old /js/ or CDN URLs
- Clean up legacy commented-out scripts in master layout

resources/views.all/widgets/mediaplayer.blade.php

@@ -0,0 +1,47 @@
+<?php 
+if(!isset($MEDIAPLAYER_INCLUDED)): 
+	// Make sure mediaplayer JS is not applied more than once on a page.
+	View::share('MEDIAPLAYER_INCLUDED', true); 
+
+	function createVideoElement($url) {
+		$type = "application/x-mpegurl";
+		if(strpos($url, "youtube.com") !== false) { $type = "video/youtube"; }
+		if(strpos($url, "youtu.be") !== false) { $type = "video/youtube"; }
+?>
+	<video controls>
+		<source src="{!!$url!!}" type="{!!$type!!}" /> 
+	</video>
+<?php
+	}
+?>
+	@push('scripts')
+	<script type="text/javascript" src="//cdnjs.cloudflare.com/ajax/libs/mediaelement/5.0.5/mediaelement-and-player.min.js"></script>
+        <script type="text/javascript" src="/js/mediaplayer_plugins.min.js"></script>
+	<script type="text/javascript">
+	  var pluginPath = 'https://cdnjs.cloudflare.com/ajax/libs/mediaelement/5.0.5/';
+          var features = ['playpause','skipback','jumpforward','current','progress','duration','volume','airplay','chromecast','fullscreen'];
+	  $("audio").mediaelementplayer({
+	    pluginPath: pluginPath,
+	    stretching: 'responsive',
+            features: features,
+            skipBackInterval: 15,
+            jumpForwardInterval: 15,
+	  });
+	  $("video").mediaelementplayer({
+	    pluginPath: pluginPath,
+	    videoWidth: '100%',
+	    videoHeight: '100%',
+	    enableAutosize: true,
+            features: features,
+            skipBackInterval: 15,
+            jumpForwardInterval: 15,
+	  });
+	</script>
+	@endpush
+
+	@push('styles')
+	<link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/mediaelement/4.2.16/mediaelementplayer.css" />
+        <link rel="stylesheet" href="/css/mediaplayer_plugins.min.css" />
+	@endpush
+
+<?php endif; ?>