Downloading report should provide a meaningful human name

[obriat]

Prerequisites

• [X] I am using the latest version of Locust
• [X] I am suggesting a new feature, not asking a question

Description

Hi, When downloading the report through the Web UI, the default name provided is report_<timesatmp>.html.

I suggest this default format: <START DATE YYYY-MM-DD-HH:MM> - Locust - <SCRIPT NAME> - <HOSTNAME>.html

This format could help sorting and finding previous reports for an human beeing

[obriat]

By the way the report summary should include initial conditions: number of users, ramp and duration

[cyberw]

Makes a ton of sense. PRs welcome!

[jayantp2003]

I am interested working on this issue, Please assign me this issue.

[obriat]

I am interested working on this issue, Please assign me this issue.

My workflow: fork the project, create a branch named after this issue, once pushed, create a PR to this project

[cyberw]

I'm assigning it to @obriat because he's the one who originally filed the issue, but I don't really care who takes a crack at it :)

[obriat]

Functions stats_report & _download_csv_suggest_file_name to alter in /locust/locust/web.py

TODO: don't know where to get the missing data: start date, filename & host (from /locust/locust/html.py?)