[FEATURE] Allow for status checks to non-HTTPS content

[Lissy93]

Category: Feature

Overview
By default, requests to insecure or non-HTTPS content should be blocked. This will likely cause the status check to fail. This PR adds an option for the user to disable this security measure for an individual endpoint, if they trust it. This is done by setting statusCheckAllowInsecure: true

Also:

• Updates the .env template, plus the variables used in the server
• Uses the v-cloak to hide text before it's finished loading
• Fixed the parsing of the update-checker during build

Issue Number #181

New Vars (if applicable)
item[n].statusCheckAllowInsecure - Optional boolean - If set to true, then security checking is disabled.

Screenshot N/A

Code Quality Checklist (Please complete)

• All changes are backwards compatible
• All lint checks and tests are passing
• There are no (new) build warnings or errors
• (If a new config option is added) Attribute is outlined in the schema and documented
• (If a new dependency is added) Package is essential, and has been checked out for security or performance
• Bumps version, if new feature added

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[viezly]

Changes preview:

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[Lissy93]

Still to do

• Fix small UI issue on the status check tooltip
• Update the environmental variable for printMsg
• Test on hosted instance, with mixed content status checks
• Maybe include the quick fix for version checking in this PR
• Bump version and update changelog

🌃 Will finish this tomorrow evening...