Build: Switching to uglify.js instead of closure compilier.  Saves 4 minutes per build, and actually produces slightly smaller files
(cherry picked from commit bd71f24f5d5c1767f24b3c88df9fab8be38ed734)

Conflicts:

	build/build.xml
Button: Create text span in correct document.
(cherry picked from commit c145f1698aa4bfb8b0d1c94e2bfa83399f1de0f3)
Autocomplete: Add 1px to the width of the menu to avoid wrapping in Firefox. Fixes #7513 - Autocomplete: long text wraps in Firefox.
(cherry picked from commit 4cc61b459d73af78dd40f01e3250f2546d9f04bd)
Position: Added a check for fraction support in element positions. Fixes #7255 - Position: Revisit solution for off-by-1 errors.
Datepicker: Changed Kazakh locale from kz to kk. Fixes #7829 - Kazakhstan language code.
(cherry picked from commit f11dab34cce80f027c74cf604394c05d32c38255)
Accordion: Fixed #7238 - Problem with accordion slide animation fixed width calculation
(cherry picked from commit 124cf3cc6c9bf182563e2fe0663cdde497700f7b)
Upgrade jQuery to 1.7.
Theme base core: Updated clearfix to 'new micro clearfix hack' by Nicolas Gallagher http://nicolasgallagher.com/micro-clearfix-hack/ . Fixed #7838 - Clearfix breaks after runs through YUI Compressor
(cherry picked from commit c21a5b4451f5eded288de4482b9508e2bd13756d)
Widget: Set event.target in ._trigger(). Fixes #7852 - Droppable event target changes under jQuery 1.7.
(cherry picked from commit 1b165148a6654f64d572bd4c28ddb2cee5f6a332)
Demos accordion hoverintent: moved event.type setter to not clobber event.type. Partial fix for #7871 - Demo accordion hoverintent: hover instead of hoverintent behavior with jQuery 1.7.0
(cherry picked from commit f0f54e38d8eab613d7ea25d698b81126e5263d83)
Selectable: add ui-selectee class to elements matching filter on refresh. Fixes #7716 - Selectable: new elements added programatically don't have class ui-selectee
(cherry picked from commit 97bc2d9de9875e222254cfa1cd3fa3bde605c2ed)
Merge pull request #511 from basti1253/master

build: removes disturbing error outputs on which call(cherry picked from commit d764388a65c5d56be7443f1de52e92876d009430)
Datepicker: Added Luxembourgish translation. Fixes #7891 Datepicker: Add Luxembourgish Translation
(cherry picked from commit 326bfec626b3039e2d51f53d2d6d2d48cdd78207)
Datepicker: Added Welsh/UK localization. Fixes #7892 Datepicker: Add Welsh/UK Localization
(cherry picked from commit 6525365944d306931e0697b7bb909e9e48a5501c)
Datepicker: Added Macedonian i18n for date picker plugin. Fixes #7893 Datepicker: Add Macedonian Localization
(cherry picked from commit b2d05f8b76a0de4e66f6a51d77b952be1633e17a)
Datepicker: added i18n for nl-BE. Fixes #7895 Datepicker: Add Dutch (Belgium) Localization
(cherry picked from commit dfbd9be72df7734451f535af6dcc1f07294c242b)
jquery.ui.datepicker-uk.js : Corrected translation of the weekHeader.(cherry picked from commit f25937b215b1302368a71d69368d4782abdb7bac)
Widget: Don't use $.event.props when creating events.
(cherry picked from commit 91ef69d7503f11f2b6223b9c0061fca51e3a006f)
Droppable: Make sure._drop is called for all relevant droppables. Fixes #6009 - Upper droppable should receive draggable. Fixes #6085 - Parent droppable takes precedence over dynamically created child droppable.
(cherry picked from commit fdc332ed5fb7f7e688151d5cae9b450569d73da5)
Datepicker: Fix `this` reference in _hideDatepicker(). Fixed #7722 - Datepicker: Does not properly clear current instance when hidden.
(cherry picked from commit c36b43d0ee3cf7e10d82d21e3a4ca6cb954f4c16)