Cleanup, Fixes and Review Feedback

Includes mix fixes like:
- Fixing the documentation
- Making sure device and storage mounts work correctly
- Fixing broken things that where supposed to work according to the PR highlights
- Moving some additional things to TrueCharts based containers
- Hiding, changing and reordening some bad UI elements
- Adding support for supplementalGroup permissions

Co-authored-by: Dan Sheridan <dan.sheridan@postman.org.uk>
Co-authored-by: Stavros Kois <47820033+stavros-k@users.noreply.github.com>
Co-authored-by: Justin Clift <justin@postgresql.org>

docs/index.md

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+---
+hide:
+  - navigation # Hide navigation
+  - toc        # Hide table of contents
+---
+
+
+TrueCharts is the community that maintains TrueCharts.
+
+### TrueCharts
+TrueCharts is a one-line iocage jail management and deployment tool for FreeNAS and FreeBSD.
+If you are interested in using TrueCharts, please visit us on github [github](https://github.com/truecharts/charts/)
+
+### Supported operating systems
+
+While we always aim for our charts to be fully stock-kubernetes compatbile, we can only guarantee compatibility with TrueNAS SCALE Apps. As we are primarily a TrueNAS SCALE App catalog.
+
+Though we try to make our Apps as version independent as possible we have a limited capacity to support older versions of TrueNAS SCALE. Our focus is the current version of TrueNAS.
+
+That being said: We do look forward to contributions to improve support for stock-kubernetes for our Charts!
+
+### Development
+
+Our development proces is fully distributed and agile, every chart-maintainer is free to set their own roadmap and development speed and does not have to comply to a centralised roadmap.
+
+This ensures freedom and flexibility for everyone involved and makes sure you, the end user, always has the latest and greated of every App installed.
+
+##### Roadmap
+
+However for big breaking changes we do have a roadmap during the ALPHA and BETA stages of TrueNAS SCALE.
+Assuming the release dates of TrueNAS SCALE will keep following the previous 2 months between releases, we will have the following big milestones:
+
+**TrueCharts 2 - TrueNAS SCALE 21.04**
+
+Will mostly be a "polish-and-fix release" and will feature heavy rewrites of core components of TrueCharts, as well as rework to have a nicer fit within the TrueNAS SCALE ecosystem.
+
+**TrueCharts DB Edition - TrueNAS SCALE 21.06**
+
+This release will focus on adding a solid framework of using (and adding) databases to Apps within TrueCharts. This will lead to significantly more App possibilities and performance increases for existing Apps.
+
+### Support or Contact
+
+Having trouble with TrueCharts? Check out our [Wiki](https://wiki.truecharts.org) or [github](https://github.com/truecharts/charts/) and we’ll help you sort it out.