Fixed race condition when cancelling the second file selection.

Revert changes from blueimp#3405.

AMD path and fileinput button area bugfix release.

Open redirect security fix release.

Updated GAE backends with memcache as file store.

Bug fix release.

Fixed broken data attributes handling for IE<9.

Apache+PHP security patch release.

CommonJS fixes. Now confirmed to work with Browserify. Thanks @luis-a…

…lmeida

Added CommonJS/Browserify support; PHP handler update; .htaccess secu…

…rity addition.