Update line endings

* Ensure that both textbox's heights are updated properly after typing 
over 140 characters in the first box
* Normalize line endings on text before storing it in the database. To 
update the database, I also ran:

for t in Thought.objects.all():
    t.extended_text = t.extended_text.replace("\r\n", "\n")
    t.text = t.text.replace("\r\n", "\n")
    t.save()

main/templates/whispermaphone/post.html

@@ -77,11 +77,11 @@
                 textEl.selectionStart = startPos;
                 textEl.selectionEnd = endPos;
             }
-        }
 
-        // TODO: Auto-set width of short text box
-        //textEl.style.width = "auto";
-        //textEl.style.width = textEl.scrollWidth + "px";
+            //Resize both text boxes
+            updateBoxHeight(textExtEl);
+            updateBoxHeight(textEl);
+        }
     });
 
     const textboxes = document.getElementsByClassName("thought");

main/views.py

@@ -64,12 +64,13 @@ def post(request):
         if len(request.POST["text"].strip()) == 0:
             return HttpResponse("Need some text.", status=400)
 
-        if len(request.POST["text"]) > 140:
+        text = request.POST["text"].replace("\r\n", "\n")
+        if len(text) > 140:
             return HttpResponse("Content too long", status=400)
 
         thought = Thought(
-            text=request.POST["text"],
-            extended_text=request.POST["extended_text"],
+            text=text,
+            extended_text=request.POST["extended_text"].replace("\r\n", "\n"),
             timezone_offset=request.POST["timezone_offset"]
         )