Question regarding "Lack of OnCompletion check allows to delete the app"

Great tool!

Hi, i was running tealer for [this](https://github.com/scale-it/algo-builder/blob/master/examples/permissioned-token/assets/permissions.py) contract in our [algo-builder/examples](https://github.com/scale-it/algo-builder/tree/master/examples). And i came accross:
```txt
Lack of OnCompletion check allows to delete the app
Check the path in can_delete_1.dot
```

But in the pyTEAL code delete app is handled (check [here](https://github.com/scale-it/algo-builder/blob/master/examples/permissioned-token/assets/permissions.py#L162)). While analyzing the cfg, it shows a red path during onInitialize (app deployment) when appID == 0. How can app be deleted for this path? Could you please validate/confirm?

[Here](https://dreampuf.github.io/GraphvizOnline/#digraph%20g%7B%0A139758695096224%5Blabel%3D%221%3A%20%23pragma%20version%204%0A2%3A%20txn%20ApplicationID%0A3%3A%20int%200%0A4%3A%20%3D%3D%0A5%3A%20bnz%20main_l22%0A%22%2C%20shape%3Dbox%2Ccolor%3Dred%5D%3B%0A139758695096224%20-%3E%20139758697192032%3B%0A139758695096224%20-%3E%20139758697214640%3B%0A139758697192032%5Blabel%3D%226%3A%20txn%20OnCompletion%0A7%3A%20int%20UpdateApplication%0A8%3A%20%3D%3D%0A9%3A%20bnz%20main_l21%0A%22%2C%20shape%3Dbox%5D%3B%0A139758697192032%20-%3E%20139758697192128%3B%0A139758697192032%20-%3E%20139758697214544%3B%0A139758697192128%5Blabel%3D%2210%3A%20txn%20OnCompletion%0A11%3A%20int%20DeleteApplication%0A12%3A%20%3D%3D%0A13%3A%20bnz%20main_l20%0A%22%2C%20shape%3Dbox%5D%3B%0A139758697192128%20-%3E%20139758697192224%3B%0A139758697192128%20-%3E%20139758697214448%3B%0A139758697192224%5Blabel%3D%2214%3A%20txn%20OnCompletion%0A15%3A%20int%20CloseOut%0A16%3A%20%3D%3D%0A17%3A%20bnz%20main_l16%0A%22%2C%20shape%3Dbox%5D%3B%0A139758697192224%20-%3E%20139758697192320%3B%0A139758697192224%20-%3E%20139758697192944%3B%0A139758697192320%5Blabel%3D%2218%3A%20txn%20OnCompletion%0A19%3A%20int%20OptIn%0A20%3A%20%3D%3D%0A21%3A%20bnz%20main_l15%0A%22%2C%20shape%3Dbox%5D%3B%0A139758697192320%20-%3E%20139758697192416%3B%0A139758697192320%20-%3E%20139758697193376%3B%0A139758697192416%5Blabel%3D%2222%3A%20txna%20ApplicationArgs%200%0A23%3A%20byte%20%5C%22change_permissions_manager%5C%22%0A24%3A%20%3D%3D%0A25%3A%20bnz%20main_l14%0A%22%2C%20shape%3Dbox%5D%3B%0A139758697192416%20-%3E%20139758697192512%3B%0A139758697192416%20-%3E%20139758697193280%3B%0A139758697192512%5Blabel%3D%2226%3A%20txna%20ApplicationArgs%200%0A27%3A%20byte%20%5C%22add_whitelist%5C%22%0A28%3A%20%3D%3D%0A29%3A%20bnz%20main_l10%0A%22%2C%20shape%3Dbox%5D%3B%0A139758697192512%20-%3E%20139758697192608%3B%0A139758697192512%20-%3E%20139758697192752%3B%0A139758697192608%5Blabel%3D%2230%3A%20txna%20ApplicationArgs%200%0A31%3A%20byte%20%5C%22transfer%5C%22%0A32%3A%20%3D%3D%0A33%3A%20bnz%20main_l9%0A%22%2C%20shape%3Dbox%5D%3B%0A139758697192608%20-%3E%20139758697191840%3B%0A139758697192608%20-%3E%20139758697192800%3B%0A139758697191840%5Blabel%3D%2234%3A%20err%0A%22%2C%20shape%3Dbox%5D%3B%0A139758697192800%5Blabel%3D%2235%3A%20main_l9%3A%0A36%3A%20int%202%0A37%3A%20gtxn%201%20XferAsset%0A38%3A%20asset_holding_get%0A39%3A%20store%200%0A40%3A%20store%201%0A41%3A%20gtxn%201%20TypeEnum%0A42%3A%20int%20axfer%0A43%3A%20%3D%3D%0A44%3A%20txna%20Accounts%201%0A45%3A%20gtxn%201%20AssetSender%0A46%3A%20%3D%3D%0A47%3A%20%26%26%0A48%3A%20txna%20Accounts%202%0A49%3A%20gtxn%201%20AssetReceiver%0A50%3A%20%3D%3D%0A51%3A%20%26%26%0A52%3A%20load%201%0A53%3A%20byte%20%5C%22max_tokens%5C%22%0A54%3A%20app_global_get%0A55%3A%20%3C%3D%0A56%3A%20%26%26%0A57%3A%20int%201%0A58%3A%20byte%20%5C%22whitelisted%5C%22%0A59%3A%20app_local_get%0A60%3A%20int%201%0A61%3A%20%3D%3D%0A62%3A%20%26%26%0A63%3A%20int%202%0A64%3A%20byte%20%5C%22whitelisted%5C%22%0A65%3A%20app_local_get%0A66%3A%20int%201%0A67%3A%20%3D%3D%0A68%3A%20%26%26%0A69%3A%20assert%0A70%3A%20int%201%0A71%3A%20return%0A%22%2C%20shape%3Dbox%5D%3B%0A139758697192752%5Blabel%3D%2272%3A%20main_l10%3A%0A73%3A%20txn%20NumAccounts%0A74%3A%20int%201%0A75%3A%20%3D%3D%0A76%3A%20txn%20RekeyTo%0A77%3A%20global%20ZeroAddress%0A78%3A%20%3D%3D%0A79%3A%20txn%20CloseRemainderTo%0A80%3A%20global%20ZeroAddress%0A81%3A%20%3D%3D%0A82%3A%20%26%26%0A83%3A%20txn%20AssetCloseTo%0A84%3A%20global%20ZeroAddress%0A85%3A%20%3D%3D%0A86%3A%20%26%26%0A87%3A%20%26%26%0A88%3A%20txn%20Sender%0A89%3A%20byte%20%5C%22manager%5C%22%0A90%3A%20app_global_get%0A91%3A%20%3D%3D%0A92%3A%20%26%26%0A93%3A%20assert%0A94%3A%20int%201%0A95%3A%20byte%20%5C%22whitelisted%5C%22%0A96%3A%20app_local_get%0A97%3A%20int%200%0A98%3A%20%3D%3D%0A99%3A%20bnz%20main_l13%0A%22%2C%20shape%3Dbox%5D%3B%0A139758697192752%20-%3E%20139758697192992%3B%0A139758697192752%20-%3E%20139758697193184%3B%0A139758697192992%5Blabel%3D%22100%3A%20int%201%0A101%3A%20return%0A%22%2C%20shape%3Dbox%5D%3B%0A139758697193088%5Blabel%3D%22102%3A%20main_l12%3A%0A103%3A%20int%201%0A104%3A%20byte%20%5C%22whitelisted%5C%22%0A105%3A%20int%201%0A106%3A%20app_local_put%0A107%3A%20int%201%0A108%3A%20return%0A%22%2C%20shape%3Dbox%5D%3B%0A139758697193184%5Blabel%3D%22109%3A%20main_l13%3A%0A110%3A%20byte%20%5C%22whitelist_count%5C%22%0A111%3A%20byte%20%5C%22whitelist_count%5C%22%0A112%3A%20app_global_get%0A113%3A%20int%201%0A114%3A%20%2B%0A115%3A%20app_global_put%0A116%3A%20b%20main_l12%0A%22%2C%20shape%3Dbox%5D%3B%0A139758697193184%20-%3E%20139758697193088%3B%0A139758697193280%5Blabel%3D%22117%3A%20main_l14%3A%0A118%3A%20txn%20NumAccounts%0A119%3A%20int%201%0A120%3A%20%3D%3D%0A121%3A%20txn%20RekeyTo%0A122%3A%20global%20ZeroAddress%0A123%3A%20%3D%3D%0A124%3A%20txn%20CloseRemainderTo%0A125%3A%20global%20ZeroAddress%0A126%3A%20%3D%3D%0A127%3A%20%26%26%0A128%3A%20txn%20AssetCloseTo%0A129%3A%20global%20ZeroAddress%0A130%3A%20%3D%3D%0A131%3A%20%26%26%0A132%3A%20%26%26%0A133%3A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is the o/p path.