Regex filter for alarms iframe

You can add a regex filter to the alarms iframe, it'll match the regex with the concatenated attributes of each alarm using the style source summary URL status property value, but without the spaces.

Example: "NetdataSystem requires reboot after package updateshttps://netdata.domain.comWARNINGOS / System1 status" for the alarm below:

• The regex is provided using the environment variable ALARMS_REGEX.
• The alarms iframe query argument regex_include can have the values true or false (true by default). If true, only alarms that match the regex will show. If false only alarms that don't match the regex.

Brazil Cinemark iframe

Shows the movie cover in the card's background instead of that static popcorn image.

Full Changelog: v1.11.0...v1.12.0