Dedicated Trigger Developer Guide's Trigger EDM section

Dedicated trigger EDM section covering:

    EDM targets
        Note on AODSLIM: Further reductions
    Optional EDM details
        InViews
        allowTruncation
        Aliases
    unit tests
    EDM manipulation
    Procedure for modifying trigger EDM
        Adding content
        Removing content
    Test and validate
        Useful trigger tests
        Tips on running own trigger tests
        Cross-check: Container recording
        Cross-check: Container content
        Estimate size increase