basic functionality regained.
added loader
tag form styling done
further work on the tag form
fixed tag form update
minor
copyright
login form working
new loader
main canvas now draggable
See description

- fixes in sift php extension
- added demonstrator for usage in php
new features for php sift extension demonstrator
New sift extension testpage
minor
merged sift test analyze and identify test pages
integrated ImageMagick image scaling.
minor
remove redundant build scripts
Merge branch 'jquery-ui'