Create a system to join loaded javascript libs in one file

[joseluis]

Make it simple enough.

• remove minified versions of libs to include
• make scripts.php an index to control what gets included and what not. And output the result
  • Concatenate the included files (OSEA_CONCATENATE_JS option to functions.php)
  • Minify files or the concatenated output (OSEA_MINIFY_JS option to functions.php)

I also entertain the idea of using scripts.php as a tool to compile the final scripts.js instead of being used as a live wrapper for dynamic compilation. I wonder what the speed difference would be.

[joseluis]

Related: #32 This will be fixed after the build tool #33 is properly configured