move haskell to fonts/ directory (issue #274) and rework plain-versions to prepare for use as font; adding haskell to devicon.json and devicon-colors.css

Author: amacado

devicon-colors.css

@@ -30,9 +30,13 @@
 .devicon-yarn-plain.colored {
   color: #2c8ebb;
 }
+.devicon-haskell-plain-wordmark.colored,
+.devicon-haskell-plain.colored{
+  color: #5E5185;
+}
 .devicon-handlebars-plain-wordmark.colored,
 .devicon-handlebars-plain.colored{
-  color: #000000;
+	color: #000000;
 }
 .devicon-couchdb-plain-wordmark.colored,
 .devicon-couchdb-plain.colored {

devicon.json

@@ -447,6 +447,14 @@
       "font": ["plain"]
     }
   },
+  {
+    "name": "haskell",
+    "tags": ["language", "functional"],
+    "versions": {
+      "svg": ["original", "original-wordmark", "plain", "plain-wordmark"],
+      "font": ["plain", "plain-wordmark"]
+    }
+  },
   {
     "name": "handlebars",
     "tags": ["framework"],