Fix javascript upload support (#520)

## Status

closes
RaspberryPiFoundation/digital-editor-issues#475
also needed to fix
RaspberryPiFoundation/digital-editor-issues#469

## What's changed?

- Added support for Javascript project files in when uploaded from
Github

## Steps to perform after deploying to production

- Give the failing projects a rebuild

Author: loiswells97

app/jobs/upload_job.rb

@@ -134,7 +134,7 @@ def categorize_files(files, project_dir, locale, repository, owner)
       mime_type = file_mime_type(file)
 
       case mime_type
-      when /text/
+      when %r{text|application/javascript}
         categories[:components] << component(file)
       when /image/
         categories[:images] << media(file, project_dir, locale, repository, owner)

app/models/filesystem_project.rb

@@ -36,7 +36,7 @@ def self.categorize_files(files, dir)
         mime_type = file_mime_type(file)
 
         case mime_type
-        when /text/
+        when %r{text|application/javascript}
           categories[:components] << component(file, dir)
         when /image/
           categories[:images] << media(file, dir)

spec/jobs/upload_job_spec.rb

@@ -69,6 +69,33 @@
                         isBinary: false
                       }
                     },
+                    {
+                      name: 'index.html',
+                      extension: '.html',
+                      object: {
+                        __typename: 'Blob',
+                        text: '<h1>Hello world!</h1>',
+                        isBinary: false
+                      }
+                    },
+                    {
+                      name: 'styles.css',
+                      extension: '.css',
+                      object: {
+                        __typename: 'Blob',
+                        text: ".h1 {\n  color: red;\n}\n",
+                        isBinary: false
+                      }
+                    },
+                    {
+                      name: 'script.js',
+                      extension: '.js',
+                      object: {
+                        __typename: 'Blob',
+                        text: "console.log('Hello, world!')",
+                        isBinary: false
+                      }
+                    },
                     {
                       name: 'project_config.yml',
                       extension: '.yml',
@@ -100,6 +127,24 @@
           extension: 'py',
           content: "#!/bin/python3\n\nfrom p5 import *\nfrom random import randint, seed\n\n# Include global variables here\n\n\ndef setup():\n# Put code to run once here\n\n\ndef draw():\n# Put code to run every frame here\n\n  \n# Keep this to run your code\nrun()\n",
           default: true
+        },
+        {
+          name: 'index',
+          extension: 'html',
+          content: '<h1>Hello world!</h1>',
+          default: false
+        },
+        {
+          name: 'styles',
+          extension: 'css',
+          content: ".h1 {\n  color: red;\n}\n",
+          default: false
+        },
+        {
+          name: 'script',
+          extension: 'js',
+          content: "console.log('Hello, world!')",
+          default: false
         }
       ],
       images: [