Updating version numbers, pdfs, archives and resources to 5.0.5 and 4.4....

...12. 

For review:
Check that all version numbers are correct in menus, page titles, page headers and the first two screenshots in both Getting Started and both Importing pages.
Check PDFs downloaded from both Getting Started and both Importing pages have correct version numbers and first two screenshots.
Check version numbers on Previous page, Resources page and Home page text.