Xporter should escape the filename during the Post Function operation

We are getting NullPointer Exception when the user has the char "\" on the filename generated.

If the filename contains the char "\", Xporter interpreted as a sub-directory.

Steps to Reproduce the problem:

• Create a new Multi Action Post Function with actions "Attach File", "Save Locally" and "Send mail".
• Right a filename for the report generated with the character "\" in the middle of the filename. Example: Filename18\19
• Execute the Post Function

Expected Solution:
We should escape the filename of the report generated

Currently creates the following:
Result action "Attach file": Does not generate document
Result action "Save Locally": Does not generate document
Result action "Send mail": Generates, but not including "\"