Add more guidance in CONTRIBUTING.md

CONTRIBUTING.md

@@ -5,6 +5,21 @@ but we need you to read this document when you open your PR or your issue:
 
 We need you to read and acknowledge our [Code of Conduct][CoC] document.
 
+The following Haskell command-line tools will have to be installed:
+
+* `postgresql-migration`: The tool used to perform schema migrations
+* `fourmolu`: The tool to style the code base
+* `hlint` & `apply-refact`: The tools to enforce certain patterns in the code base ("lint")
+* `cabal-fmt` and `nixfmt`: the tools to style the cabal and nix files
+* `ghcid`: The tool to automatically reload the Haskell code base upon source changes
+
+```bash
+$ cabal install -j postgresql-migration fourmolu hlint apply-refact cabal-fmt nixfmt ghcid
+```
+
+* `yarn`: The tool that handles the JavaScript code bases
+* `esbuild`: The tool that handles asset bundling
+
 ### Pull Requests
 
 You need to

README.md

@@ -50,7 +50,7 @@ tools will still be accessible.
 
 ### Flora server
 
-Configuration is handled through environment variables. They are all prefixed by `FLORA_` to avoid conflict, and the
+The configuration is handled through environment variables. They are all prefixed by `FLORA_` to avoid conflict, and the
 server will tell you which ones are missing.
 
 To start in the best of conditions, create a file called `environment.local.sh` with the following content:
@@ -88,7 +88,7 @@ you can also use `db-create` and `db-drop` to create and delete the database in
 ### Docker Workflow
 
 A docker-based workflow is provided. The idea is to develop from within a container that brings with it all dependencies,
-and communicates with another container for the Postgres database.
+and communicates with another container for the PostgreSQL database.
 
 ```bash
 # You need to build the container first. It's gonna take around 13 minutes the first time you build