View .txt files and files with other extensions

[spotlesscoder]

Elastalert has an import feature in the rule config files.

Common settings can be stored in a file and imported in every rules. Sometimes, it is necessary to change something in such a file. I use .txt files. Maybe some people even use different file extensions

I want to be able to edit those, too from withing the UI.

A security aspect should be kept in mind:

JIRA credentials are stored in a separate file when using the JIRA alerter. I guess this also applies to slack, etc.

All the rules should be scanned for how the credentials files are called. Those files should not be accessible from the plugin's UI by everyone by default.