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

frontend/node_modules/ajv/lib/dot/missing.def

@@ -1,39 +0,0 @@
-{{## def.checkMissingProperty:_properties:
-  {{~ _properties:$propertyKey:$i }}
-    {{?$i}} || {{?}}
-    {{
-      var $prop = it.util.getProperty($propertyKey)
-        , $useData = $data + $prop;
-    }}
-    ( ({{# def.noPropertyInData }}) && (missing{{=$lvl}} = {{= it.util.toQuotedString(it.opts.jsonPointers ? $propertyKey : $prop) }}) )
-  {{~}}
-#}}
-
-
-{{## def.errorMissingProperty:_error:
-  {{
-    var $propertyPath = 'missing' + $lvl
-      , $missingProperty = '\' + ' + $propertyPath + ' + \'';
-    if (it.opts._errorDataPathProperty) {
-      it.errorPath = it.opts.jsonPointers
-                      ? it.util.getPathExpr($currentErrorPath,  $propertyPath, true)
-                      : $currentErrorPath + ' + ' + $propertyPath;
-    }
-  }}
-  {{# def.error:_error }}
-#}}
-
-
-{{## def.allErrorsMissingProperty:_error:
-  {{
-    var $prop = it.util.getProperty($propertyKey)
-      , $missingProperty = it.util.escapeQuotes($propertyKey)
-      , $useData = $data + $prop;
-    if (it.opts._errorDataPathProperty) {
-      it.errorPath = it.util.getPath($currentErrorPath, $propertyKey, it.opts.jsonPointers);
-    }
-  }}
-  if ({{# def.noPropertyInData }}) {
-    {{# def.addError:_error }}
-  }
-#}}