coding style fixes: cut long lines, whitespace

Only whitespace and line break changes. Please review @PVince81 @DeepDiver1975 @schiesbn 

See https://scrutinizer-ci.com/g/owncloud/core/issues/files/settings/js/apps.js?selectedAuthors[0]=hey%40jancborchardt.net&selectedAuthors[1]=JanCBorchardt%40fsfe.org&orderField=path&order=asc