Add support to filter out comments

[KamarajuKusumanchi]

Feature Description

It is probably not a standard practice, but I frequently encounter csv files with some comments at the top and some data after that. For example

# Number is an integer
# Name is a string separated by a space
# Details is a string that might have commas in it. If the latter, 
# enclose it in double quotes.
Number,Name,Details
1,Power Man,Blue
2,Red Book,"Yellow, but blue"

It would be very helpful if there is a way to filter out the comments (the lines starting with # character) but display everything else.

BTW thanks a lot for writing dokuwiki and all these incredibly useful plugins. Hats off to the authors.