UTILS: added type to scripts file names

 - Added type (.type) to script files so they can be recognized for syntax highlighting by IDEs.
 - Updated names in scripts where they call each other.
 - Added simple README.md telling what each script does.
WEB: added bugs.shtml with description of known bugs
Merge pull request #200 from zlamalp/bugs

WEB: added bugs.shtml with description of known bugs
Merge pull request #199 from zlamalp/utils

UTILS: added type to scripts file names
WEB: reversed changelog order

- Reversed changelog entries order so latest changes are at the top
  of page (older changes are below).
  This is more compliant to standard software changelogs and I believe
  more convenient to users seeking for "latest changes".
Merge pull request #201 from zlamalp/change

WEB: reversed changelog order