SRADA-680: Updated DIBS build script to use maven

SRADA-680: Updated DIBS build script to use maven

Changes:
 * updated some build paths
 * removed no more necessary functions:
   - __copy_build_sources
   - __copy_dependency_plugins
   - __make_ant_properties_files
   - __copy_necessary_binaries
   - __unzip_plugin_pack
 * added backup of product information files in __set_product_about_info
 * added restoration of product information files in __restore_product_info
 * modified __clean_build_environment to remove only built project
 * removed copying of 'config' directory from 'packaging_bfiles'

Change-Id: I1a3fde0816c73b7bed14ae607b8b88f5fda03925