Fix several Editor cell problems

[spyder-bot]

From ccordoba12 on 2013-09-13T22:48:37Z

I found two problems with cells while trying to use Ctr+Enter to create the indentation level I needed (like you can do with Kate for example):

1. Ctrl+Enter is sending the entire file contents to the console if it can't find a separator (which is obviously not what the user is expecting, i.e. that it does nothing).
2. Ctrl+Enter is sending any non-Python file to the console (quite wrong too).

Original issue: http://code.google.com/p/spyderlib/issues/detail?id=1564

[spyder-bot]

From ccordoba12 on 2013-09-13T21:07:04Z

This issue was updated by revision b8379675371d .

Status: Started

[spyder-bot]

From ccordoba12 on 2013-09-13T21:07:05Z

This issue was updated by revision f46e58b3e104 .

• Also add some helpful comments to understand how we are selecting the cell
  contents.

Status: Fixed