* Return GraphImage to include more metadata
Allows things like including title.
Implements __toString for backwards compatability
getImageData to allow controlling the output through flags
* Style and Lint
* Email embed graphs
* Allow attachment for non-html
Add setting to webui
Correct $auth setting
* Cleanups, throw RrdGraphException instead of returning an error image.
Generate the error image later, giving more control.
Reduce code duplication a little
* Style and lint fixes
Change to flags
* Add baseline for lint errors I don't know how to resolve
* oopsie, changed the code after generating the baseline
* Tiny cleanups. Make set DeviceCache primary, it is free.
* Docs.
* email_html note
* Allow control of graph embed at the email transport level to override the global config.
* Allow control of graph embed at the email transport level to override the global config.
* Add INLINE_BASE64 to make it easier to create inline image tags
* More secure external graph access
Add @signedGraphTag() and @signedGraphUrl() blade directives
Takes either an array of graph variables or a url to a graph
Uses a signed url that is accessible without user login, embeds signature in url to authenticate access
See Laravel Signed Url for more details.
Adds Laravel route to graphs (does not change links to use it yet)
@graphImage requires the other PR
Also APP_URL is required in .env
* missing files from rebase
* Fix url parsing with a get string
* allow width and height to be omitted
* Documentation
* Add to, otherwise it will always be now
* Doc note for to and from relative security
* fix vars.inc.php (Laravel has a dummy url here)
