Made some fixes to Si databases.

Added starred atoms to the H_Abstraction training dictionary. Fixed a comma in the SiliconHydride thermo library.
Updated groups, recipe and training for silylene insertion.

Added groups, and changed some groups to new adjacency list format. This made it necessary to change recipe to decrease lone pairs rather than decrease the radical count by 2.

Added more training reactions for silylene insertion.
Fix to H_Abstraction groups.

Named the group corresponding to silylene improperly.