Add TP for check assurance level presence and value
Fix references

Add TP to check correct signer type for authorization ticket

check that AA signed by root or other AA

Check start < end instead of start <= end
TP is modified to support all 3 types of time validity restrictions for future use of other certificates.

Keep duplicated TPs for 3 section to follow the standard
#0007273

length restriction added

Summary: AA --> AT

TP reformulated

strange sentence removed from TP