Improved efficiency of reading a file by accumulating the result of 100 characters at a time, instead of 1000000

Did a full cleanup of the communication parts of the iData library. It still needs some tweaking, but is ready to be alpha tested during iTask development.

Changes include:
 - Removal of dirty low level parsing in the EncodeDecode library
 - Removal of embedded javascript fragments scattered across the clean code
 - Centralization of all javascript functionality into one javascript library that is alway available
 - Addition of a method for serving shared static resources (images, javascript, css etc.) from a central
   location. (Libraries/iData/Resources/)
 - Moving of flag macros that have to be set during different compile runs to a separate module (iDataCompileOptions).
- Change to the type of doHtmlClient to allow for switching between client and server compilation without changing any sources.

 And many small tweaks and cleanups everywhere in the codebase

Added a subserver wrapper option to the http library. It should however only be used in experimental environments, because it is based on the undocumented CleanServer API, instead of stable pure Clean libraries.

Also moved the makeResponse function in the HttpServer, HttpCGI and HttpSubServer modules to a unified http_makeResponse function in HttpUtil

Added Http library. This library contains an HTTP server and CGI Wrapper which are meant to replace the old CleanServer HTTP1.0 server and HTTP1.1 subserver.