- add event DB;
  - fix simulation according to event DB;
  - add condition to generate proper eo_do for callback
    because I need to fetch "&_CLICKED_EVENT" from DB;
  - add wdg_parent_resolve() to set parents after parsing.

Signed-off-by: Yakov Goldberg <yakov.g@samsung.com>
Merge branch 'develop': hadnle event DB and simulation/generation for Cb