Updated bootstrap CDN for final report
Put all report related styles into report.scss

I want to be able to download report.css for the final report, so all
styles used by it must go there.
Moved report.css out of main.css into it's own file
Included report.css into final report
Automatically prepend http protocol to pages #136
Refactored addPage methods
Removed auto-create pages in explore

Also a message of this has been added a notice message when the page
list / knownTech list is empty.