Changed clause and info in database dump

Clause database change:

WCAG text removed from clause descriptions 9, 10 and 11.1-11.4.

intro has to be changed in the info database
1. About this document and Copyright Notice - last 2 para are deleted
2. Sources used to compile this document - only first link is kept
3. Part B - Functional accessibility requirements - to be changed
4. Part A and scope is unchanged
remove Annex - Chapter 14 Conformance
remove Annex - References (from EN 301 549)
remove Annex - Definition of terms, symbols and abbreviations (from EN 301 549)
remove Annex - Practical guidance for accessible non-web documentation
add Customizable information section