This will replace http header file timestamps
* read function in info reader has retrieval mode flag, unused parameters removed
* waitForDbInfoObjects/getDbInfoDataReader (added "Db"), there will be a 2nd reader
* CWebReaderFlags::DbInfoDataReader (added "Db")
* removed ps_read, only read (public)
(applied after 1st performance fix for cache was ready)
* utility functions to detect if only caches are used
* renamed some functions
* renamed some db flags and added new ones
* flags for readers (which reader is reading specific entities etc.)
* web data services: bundling multiple readers (webdataservices) and implementing IWebDataReaderProvider
* readers now able to read single entities