switch from Ender to jQuery 2

[elf-pavlik]

IMO current setup with Ender looks bit messy :(
Many people feel very familiar with jQuery and after 2.0 it have gotten much lighter. Also current Makefile has quite a lot tricks to build Ender dependency...

AMD +jQuery setup: http://requirejs.org/docs/jquery.html

[elf-pavlik]

currently we use jQuery2 in rewrite: https://github.com/elevate-festival/neokarto-party