Update minified YUI to version 2.9 built from Source.

yui.2.9.js used to be a minified version of YUI 2.9 until 5143b8df576c updated
it to something else and applied more aggresive minification. We stick to a
clean but minified version 2.9.

The license of YUI is BSD 3-clause, as described on
http://yuilibrary.com/license/ .

Since the minified version combines with GPLv3'd Javascript, it is only GPLv3'd
compliant to distribute this Object Code version with the Corresponding Source
(or offer therefor).

This yui.2.9.js is built from Source this way:
  git clone https://github.com/yui/builder
  git clone https://github.com/yui/yui2
  cd yui2/
  git checkout hudson-yui2-2800
  ln -sf JumpToPageDropDown.js src/paginator/js/JumpToPageDropdown.js # work around inconsistent casing
  rm -f tmp.js
  for m in yahoo event dom connection animation dragdrop element datasource autocomplete container event-delegate json datatable paginator; do
    rm -f build/$m/$m.js; ( cd src/$m && ant build deploybuild ) && sed -e 's,@VERSION@,2.9.0,g' -e 's,@BUILD@,2800,g' build/$m/$m.js >> tmp.js
  done
  java -jar ../builder/componentbuild/lib/yuicompressor/yuicompressor-2.4.4.jar tmp.js -o yui.2.9.js

The source is mirrored and available on https://kallithea-scm.org/repos/mirror .

LICENSE.md

@@ -121,4 +121,60 b' and licensed under the MIT-permissive li'
 
 
 
+YUI
+---
+
+Kallithea incorporates parts of the Javascript system called
+[YUI 2 — Yahoo! User Interface Library](http://yui.github.io/yui2/docs/yui_2.9.0_full/),
+which is made available under the [BSD License](http://yuilibrary.com/license/):
+
+Copyright © 2013 Yahoo! Inc. All rights reserved.
+
+Redistribution and use of this software in source and binary forms, with or
+without modification, are permitted provided that the following conditions are
+met:
+
+* Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright notice,
+  this list of conditions and the following disclaimer in the documentation
+  and/or other materials provided with the distribution.
+
+* Neither the name of Yahoo! Inc. nor the names of YUI's contributors may be
+  used to endorse or promote products derived from this software without
+  specific prior written permission of Yahoo! Inc.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+Kallithea includes a minified version of YUI 2.9. To build yui.2.9.js:
+
+    git clone https://github.com/yui/builder
+    git clone https://github.com/yui/yui2
+    cd yui2/
+    git checkout hudson-yui2-2800
+    ln -sf JumpToPageDropDown.js src/paginator/js/JumpToPageDropdown.js # work around inconsistent casing
+    rm -f tmp.js
+    for m in yahoo event dom connection animation dragdrop element datasource autocomplete container event-delegate json datatable paginator; do
+      rm -f build/\$m/\$m.js
+      ( cd src/\$m && ant build deploybuild ) && sed -e 's,@VERSION@,2.9.0,g' -e 's,@BUILD@,2800,g' build/\$m/\$m.js >> tmp.js
+    done
+    java -jar ../builder/componentbuild/lib/yuicompressor/yuicompressor-2.4.4.jar tmp.js -o yui.2.9.js
+
+In compliance with GPLv3 the Corresponding Source for this Object Code is made
+available on
+[https://kallithea-scm.org/repos/mirror](https://kallithea-scm.org/repos/mirror).
+
+
+
 EOF