Add detection of Prism (#1825)

This can be tested on its [official website](http://prismjs.com/), and on [this blog](http://matthewturland.com/2014/03/29/ledger-basics-and-habits/)

src/apps.json

@@ -6716,6 +6716,15 @@
 			},
 			"website": "http://www.prestashop.com"
 		},
+		"Prism": {
+			"cats": [
+				"19"
+			],
+			"env": "^Prism$",
+			"icon": "Prism.svg",
+			"script": "prism\\.js",
+			"website": "http://prismjs.com"
+		},
 		"Project Wonderful": {
 			"cats": [
 				"36"

src/icons/Prism.svg

@@ -0,0 +1,22 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 200 170">
+	<path fill="#fff" d="M55.37 131.5H48.4v9.13h6.97c1.67 0 2.92-.4 3.78-1.22.85
+	-.8 1.28-1.92 1.28-3.33s-.43-2.54-1.28-3.35c-.86-.8-2.12-1.2-3.78-1.2m29.52
+	6.4c.3-.53.47-1.2.47-2.04 0-1.35-.45-2.4-1.37-3.2-.92-.76-2.14-1.15-3.65
+	-1.15H72.9v8.52h7.32c2.26 0 3.82-.7 4.67-2.1M100 0L0 170h200L100 0M60.86
+	141.03c-1.3 1.22-3.1 1.84-5.33 1.84H48.4v7.55H46v-21.2h9.53c2.24 0 4.02.63
+	5.34 1.87 1.3 1.23 1.96 2.88 1.96 4.95 0 2.1-.66 3.75-1.97 4.98m24.5 9.4l
+	-5.1-8.14h-7.37v8.12h-2.4v-21.2h10.14c2.15 0 3.88.6 5.18 1.8 1.3 1.18 1.95
+	2.8 1.95 4.84 0 2.64-1.1 4.44-3.3 5.4-.6.28-1.22.5-1.82.6l5.57 8.56h-2.85m
+	13.43 0h-2.4v-21.2h2.4v21.2m23.56-1.32c-1.48 1.05-3.53 1.57-6.16 1.57-2.96 0
+	-5.23-.6-6.78-1.85-1.4-1.1-2.18-2.7-2.37-4.74h2.5c.08 1.45.78 2.56 2.1 3.33
+	1.16.67 2.68 1 4.58 1 3.97 0 5.95-1.25 5.95-3.74 0-.86-.35-1.53-1.07-2.02-.7
+	-.5-1.6-.9-2.68-1.2-1.07-.33-2.24-.63-3.48-.9s-2.4-.65-3.5-1.08-1.97-1.02
+	-2.68-1.73c-.7-.72-1.07-1.68-1.07-2.9 0-1.73.65-3.13 1.97-4.22 1.32-1.08
+	3.32-1.62 6-1.62 2.67 0 4.75.6 6.23 1.85 1.34 1.1 2.05 2.5 2.14 4.2h-2.46c
+	-.22-1.76-1.35-2.92-3.4-3.5-.72-.2-1.62-.3-2.7-.3s-1.98.1-2.72.35c-.74.25
+	-1.3.55-1.7.9-.42.35-.7.74-.83 1.17s-.2.88-.2 1.36c0 .5.2.93.62 1.33s.96.75
+	1.65 1.03c.68.28 1.46.52 2.33.73.88.2 1.77.43 2.67.65.9.22 1.8.48 2.68.77.87
+	.3 1.65.65 2.33 1.1 1.53.96 2.28 2.27 2.28 3.94 0 2-.74 3.5-2.22 4.55m28.84
+	1.32v-17.54l-7.84 10.08-7.97-10.08v17.54H133v-21.2h2.78l7.58 10.06 7.45
+	-10.05h2.8v21.2h-2.4"/>
+</svg>