pidgin/nest

Add pgp public key and refer to it in our security disclosure method

The idea behind this is to make sure people that choose to use email to let us
known about a potential security issue in Pidgin encrypt the content of the
emails using a set of pgp keys of trusted Pidgin developers. For now we only
have the pgp key of grim but more keys can easily be added later on.

At the same time, since Hugo does not currently have a built-in shortcode for
linking directly to static resources, I had to add a new shortcode for doing so

Testing Done:
Ran `dev-server.sh` and made sure content looked as intended and links worked.

Bugs closed: NEST-46

Reviewed at https://reviews.imfreedom.org/r/860/
# Hugo Learn Theme
This repository contains a theme for [Hugo](https://gohugo.io/), based on great [Grav Learn Theme](https://learn.getgrav.org/).
Visit the [theme documentation](https://learn.netlify.com/en/) to see what is going on. It is actually built with this theme.
[![wercker status](https://app.wercker.com/status/233466a2be73fcea400e7dc02ef6adf9/s/master "wercker status")](https://app.wercker.com/project/byKey/233466a2be73fcea400e7dc02ef6adf9)
[![FOSSA Status](https://app.fossa.io/api/projects/git%2Bgithub.com%2Fmatcornic%2Fhugo-theme-learn.svg?type=shield)](https://app.fossa.io/projects/git%2Bgithub.com%2Fmatcornic%2Fhugo-theme-learn?ref=badge_shield)
## Main features
- Automatic Search
- Multilingual mode
- Unlimited menu levels
- Automatic next/prev buttons to navigate through menu entries
- Image resizing, shadow…
- Attachments files
- List child pages
- Mermaid diagram (flowchart, sequence, gantt)
- Customizable look and feel and themes variants
- Buttons, Tip/Note/Info/Warning boxes, Expand
## Installation
Navigate to your themes folder in your Hugo site and use the following commands:
```
$ cd themes
$ git clone https://github.com/matcornic/hugo-theme-learn.git
```
Check that your Hugo version is minimum `0.25` with `hugo version`.
![Overview](https://github.com/matcornic/hugo-theme-learn/raw/master/images/tn.png)
## Usage
- [Visit the documentation](https://learn.netlify.com/en/)
## Download old versions (prior to 2.0.0)
If you need old version for compatibility purpose, either download [theme source code from releases](https://github.com/matcornic/hugo-theme-learn/releases) or use the right git tag. For example, with `1.1.0`
- Direct download way: https://github.com/matcornic/hugo-theme-learn/archive/1.1.0.zip
- Git way:
```shell
cd themes/hugo-theme-learn
git checkout tags/1.1.0
```
For both solutions, the documentation is available at https://github.com/matcornic/hugo-theme-learn/releases/download/1.1.0/hugo-learn-doc-1.1.0.zip
## Credits
Many thanks to [@vjeantet](https://github.com/vjeantet/) for the fork [docdock](https://github.com/vjeantet/hugo-theme-docdock). The v2 of this theme is mainly based on his work !
## License
[![FOSSA Status](https://app.fossa.io/api/projects/git%2Bgithub.com%2Fmatcornic%2Fhugo-theme-learn.svg?type=large)](https://app.fossa.io/projects/git%2Bgithub.com%2Fmatcornic%2Fhugo-theme-learn?ref=badge_large)