Adding delete feature to script

[deming7h777]

ideal command :
python manage.py delete [organism]
python manage.py delete [blastdb]
python manage.py delete [hmmerdb]

advanced :
delete multiple db or species in the same time
python manage.py delete [organism1] [organism2] . . .
python manage.py delete [blastdb1] [blastdb2] . . .

another delete command:
python manage.py delete -org [organism1]
python manage.py delete -b [blastdb1]
python manage.py delete -h [hmmerdb1]

advanced command:
python manage.py delete -org [org1] [org2] . . .
python manage.py delete -b [blastdb1] [blastdb2] . . .
python manage.py delete -h [hmmerdb1] [hmmerdb2] . . .

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When the species is deleted, the cascade field and data should be deleted at the same time.
As same as the situation of species, it should deletes the cascading table when blastdb and hmmerdb be deleted but not the species.

[deming7h777]

The delete feature is complete and now working on advanced feature that can deal with multiple input

[deming7h777]

need to combine the string for each " for loop " but it successfully delete the every item from input