Merge
Windows installer: add necessary dirs to PATH

- dropped unnecessary ImageMagick libs
- dropped the editenv plugin
- moved non-Python DLLs away from Python27\Lib
Windows: added a script for building the installer

- documentation updated
- 48x48 fmbt icon added
Windows installer: include pythonshare
Windows installer: fix running convert.exe

- added fMBT in front of the PATH to execute correct convert.exe
  (nasty, but ImageMagick installer does the same)
- added libmagick dlls needed by convert.exe
Windows installer: fix fmbt-scripter iconv.dll error
Merge remote-tracking branch '01/devel' into for-devel