Update SP11_archiveBuilder.py

bug report from mark: 1) The issue with slashes facing the wrong way is still present, breaking any links to course files or scoring guides that were manually entered into celeste (as opposed to be auto-generated). I believe this happens when the script converts vista paths to BB9. An example is:
 
/bbcswebdav\institution\IT\IT4795\Version0713\Course_Files\
 
 
2) Occasionally I see links in courses to scoring guides and course files where the path contains /scoring_guides/ or /course_files/, when it needs to be capitalized to /Scoring_Guides/ and /Course_Files/ to work in bb9. This is because the path was entered with all lowercase letters in celeste.
 
 
3) Occasionally, there will be an activity with an empty resource box. It seems to happen on project preparation studies that only had the PDSG as a resource. The code for the empty resource box is <div class="floatboxright"><h4>Resources</h4><ul class="no-bullet"></ul></div>.