[FEATURE] add prefix for app

[skapin]

Hi, I patched the application to handle a PREFIX when the app is deployed on wbeserver like :

myserver.com/subpath/foobuzz/

I had to:

• use url_for everywhere
• prefix all route
• add prefix on app start for static path

Prefix is loaded from FLASK_APP_PREFIX env. This is the quickest way. The clean way is to use blueprint and propre web server starting

[skapin]

I have passed black, you can retrigger

[jtpereyda]

Very cool @skapin ! Have you functional tested both with and without the prefix?

[jtpereyda]

Docs build is failing -- not sure if that is new or existing.

[skapin]

i didnt touch any doc. why should I need ?

For tests, it would be good if someone test it too, especially since i'm not the user using boofuzz, I made the change for someone. Because of this, I tested one usecase only.

[SR4ven]

Regarding the failing docs build, it's just a link-check that returns 403 Forbidden. Would ignore that for this PR and I'll look into this separately. Maybe Stackoverflow has blocked robot requests coming from GitHub CI server or so.

[jtpereyda]

@skapin Are you saying you tested it FLASK_APP_PREFIX but did not test it without?

[jtpereyda]

Ignoring the docs issue as it's separate. Merging. Thanks @skapin @SR4ven !