Added 'arguments' to the concepts list, and renamed while loops to just 'Loops', for now

app/locale/en.coffee

@@ -1197,6 +1197,7 @@
   concepts:
     advanced_strings: "Advanced Strings"
     algorithms: "Algorithms"
+    arguments: "Arguments"
     arithmetic: "Arithmetic"
     arrays: "Arrays"
     basic_syntax: "Basic Syntax"
@@ -1212,7 +1213,7 @@
     strings: "Strings"
     variables: "Variables"
     vectors: "Vectors"
-    while_loops: "While Loops"
+    while_loops: "Loops"
     recursion: "Recursion"
 
   delta:

app/schemas/schemas.coffee

@@ -239,6 +239,7 @@ me.task = me.object {title: 'Task', description: 'A task to be completed', forma
 me.concept = me.shortString enum: [
     'advanced_strings'
     'algorithms'
+    'arguments'
     'arithmetic'
     'arrays'
     'basic_syntax'