Fix a problem where a source block would return nil oif the result was
cached and it was indented.
* lisp/ob-core.el (org-babel-execute-src-block): Move point to the the
first character of the result instead of the beginning of the line.
* testing/lisp/test-ob.el
(test-org-babel/indented-cached-org-bracket-link): Added test to
to see if the indented cached result returns what it should return.