Stylesheet .articblue renamed to .arcticblue

Thanks eatfrog

src/stylesheets/css/Lungo.widgets.colour.css

@@ -8,8 +8,8 @@ a.green,.green{background-color:#009600;}
 a.green:active{background-color:#00770e;}
 a.blue,.blue{background-color:#237fd7;}
 a.blue:active{background-color:#1a69b6;}
-a.articblue,.articblue{background-color:#2daebf;}
-a.articblue:active{background-color:#238e9e;}
+a.arcticblue,.arcticblue{background-color:#2daebf;}
+a.arcticblue:active{background-color:#238e9e;}
 a.orange,.orange{background-color:#ff5c00;}
 a.orange:active{background-color:#da4e15;}
 a.purple,.purple{background-color:#7b658d;}

src/stylesheets/less/Lungo.widgets.colour.less

@@ -17,8 +17,8 @@ a.green, .green{background-color: #009600;}
 a.green:active{background-color: #00770e;}
 a.blue, .blue{background-color: #237fd7;}
 a.blue:active{background-color: #1a69b6;}
-a.articblue, .articblue{background-color: #2daebf;}
-a.articblue:active{background-color: #238e9e;}
+a.arcticblue, .arcticblue{background-color: #2daebf;}
+a.arcticblue:active{background-color: #238e9e;}
 a.orange, .orange{background-color: #ff5c00;}
 a.orange:active{background-color: #da4e15;}
 a.purple, .purple{background-color: #7b658d;}