Makes this page compliant with HTTP/1.1 RFC2616 and RFC7230
"HTTP/1.1 defines the sequence CR LF as the end-of-line marker for all protocol elements except the entity-body"
This only had LF, and when used with nodejs and axios that page would fail to be retrieved and throw a HPE_INVALID_HEADER_TOKEN error. (other pages likely need that fix, but retrieving the image was most important and most useful, I personally use it with Scrypted, which then uses this as the camera snapshot in Apple Home app)
Added -n to echo to make it clearer for myself, which removes the otherwise automatically added LF
* add ability to restrict www access / css changes
-can now use WEB_SERVER_OPTIONS to decide what parts of the web system are accessible. Set it to `WEB_SERVER_OPTIONS="cam config car jpeg"` to access everything. Remove things you don't want accessible.
-make the top part of the pages cleaner - now the image in config/cam defaults to smaller but is clickable to see it bigger.
- separate feed.js from config.js and cam.js
-add warning about RTSP fimrware to diagnostics
* add info on WEB_SERVER_OPTIONS
* Update multicam.html
track and display refresh speed.
* updated shared.cgi to read T20 firmware ver
* improvements and fixes
1. now composes urls for RTSP
2. css improvements
3. added diagnostics (got to test first hand with a corrupt file system SD card!)
4. fixed reboot not rebooting ...
5. remove debug code from jpeg.cgi
fixed display of camera version, fixed issue jpeg.cgi, added diagnostics page, minor css improvements, made shared.cgi for common code between diagnostics and config
* updates to config.cgi and jpeg.cgi
* Update config.cgi
* config.cgi: type checks, blank line keep, css
* renamed to config.css (other css not used)
* fix bad link
