feat(manager): adds 'if-messages' utility that only renders contents …

…if messages exist (Jigsaw-Code#1482)

* does it

* Update if_messages.ts

* address feedback and fix compilation

* Update src/server_manager/web_app/ui_components/if_messages.ts

Co-authored-by: Vinicius Fortuna <fortuna@users.noreply.github.com>

* annotate converter string

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Co-authored-by: Vinicius Fortuna <fortuna@users.noreply.github.com>

no description provided

## Features

* build upgrade for aarch64/arm64 architecture (Jigsaw-Code#1399)
## Bugfixes
* improve Docker container existence detection in install_server.sh

## Features

* build upgrade for aarch64/arm64 architecture (Jigsaw-Code#1399)
## Bugfixes
* improve Docker container existence detection in install_server.sh

## Features

* build upgrade for aarch64/arm64 architecture (Jigsaw-Code#1399)
## Bugfixes
* improve Docker container existence detection in install_server.sh

## Features

* build upgrade for aarch64/arm64 architecture (Jigsaw-Code#1399)
## Bugfixes
* improve Docker container existence detection in install_server.sh

## Features

* build upgrade for aarch64/arm64 architecture (Jigsaw-Code#1399)
## Bugfixes
* improve Docker container existence detection in install_server.sh

## Features

* build upgrade for aarch64/arm64 architecture (Jigsaw-Code#1399)
## Bugfixes
* improve Docker container existence detection in install_server.sh

no description provided