Fix formatting and linting for prettier

app/.eslintrc

app/.prettierrc

app/client/main.html

app/imports/api/appsettings/appsettings.js

app/imports/api/appsettings/methods.js

app/imports/api/articles/server/publications.js

app/imports/api/files/server/config.js

app/imports/api/files/server/methods.js

app/imports/api/groups/groups.js

app/imports/api/groups/methods.js

app/imports/api/groups/server/groups.tests.js

app/imports/api/groups/server/publications.js

app/imports/api/migrations.js

app/imports/api/personalspaces/methods.js

...imports/api/personalspaces/server/personalspaces.tests.js

app/imports/api/services/server/services.tests.js

app/imports/api/users/server/methods.js

app/imports/api/users/server/publications.js

app/imports/api/users/users.js

app/imports/startup/server/config/security.js