Add yet-another-react-lightbox package and update .gitignore to exclude node_modules

frontend/node_modules/react-dropzone/.eslintrc

@@ -1,37 +0,0 @@
-{
-  "parser": "@babel/eslint-parser",
-  "parserOptions": {
-    "ecmaVersion": 2017,
-    "sourceType": "module"
-  },
-  "env": {
-    "es6": true,
-    "node": true,
-    "jest": true
-  },
-  "plugins": [
-    "import",
-    "node",
-    "prettier"
-  ],
-  "extends": [
-    "eslint:recommended",
-    "plugin:prettier/recommended"
-  ],
-  "rules": {
-    "strict": 0,
-    "node/no-unpublished-require": 0,
-    // Import
-    "import/no-extraneous-dependencies": [
-      2,
-      {
-        "devDependencies": [
-          "webpack*.js",
-          "**/*.spec.js",
-          "**/*.config.js",
-          "**/testSetup.js"
-        ]
-      }
-    ]
-  }
-}