This change adds a `GOPHISH_INITIAL_ADMIN_PASSWORD` environment variable so that system administrators can set the initial admin password rather than having it randomly generated. This is especially useful in automated deployment scenarios, or scenarios using Docker (ref #1876, #1874)
This PR adds the initial work to implement a password policy as defined in #1538.
Specifically, this implements the following
* Rate limiting for the login handler
* Implementing the ability for system admins to require a user to reset their password
* Implementing a password policy that requires passwords to be a minimum of 8 characters
* Removes the default password (gophish) for admin users to instead have the password randomly generated when Gophish first starts up
* Adds a password strength meter when choosing a new password
Fixes#1538
* Refactoring servers to support custom workers and graceful shutdown.
* Refactoring workers to support custom mailers.
* Refactoring mailer to be an interface, with proper instances instead of a single global instance
* Cleaning up a few things. Locking maillogs for campaigns set to launch immediately to prevent a race condition.
* Cleaning up API middleware to be simpler
* Moving template parameters to separate struct
* Changed LoadConfig to return config object
* Cleaned up some error handling, removing uninitialized global error in models package
* Changed static file serving to use the unindexed package
Adds the capability to report phishing campaigns using an email client extension.
**Note: Gophish does not currently provide an email client extension out of the box. This is simply a mechanism to let existing email client add-ons send report status information to Gophish, and have that information reflected in the dashboard.**
Better logging in controllers module
DRY changes to API
Added Data attribute to models.Response struct
Added GetTemplateByName (will be used in filling out campaign)
Changed modal to be 800px on large screens for better previews
Moved constants to models.go
Changed Campaign.Template to be an actual template (will need to adjust all the methods to handle it)
Added UpdateCampaignStatus function to update a campaign status
Updated groups to belong to one user. I may make a Team and TeamGroups, and TeamUsers m2m relationships later.
Added another test - more on the way soon.
