## Steps to reproduce
* In Nextcloud, create a document test.ODS (whatever the extension : XLS, ODT...)
* click on it to edit it with Collabora Online

## Actual behaviour

* the document is open in readonly mode

## Expected behaviour

* the document should be open in edit mode

Nextcloud (richdocuments) passes the right variable "edit".
Rename the document "test.ods" and it works

See here : https://github.com/LibreOffice/online/blob/master/wsd/DocumentBroker.cpp#L474

## General server configuration

**Operating system:** Linux 3.10.0-693.5.2.el7.x86_64 #1 SMP Fri Oct 20 20:32:50 UTC 2017 x86_64

**Webserver:** Apache/2.4.6 (CentOS) OpenSSL/1.0.2k-fips mod_fcgid/2.3.9 PHP/7.1.11 (apache2handler)

**Database:** mysql 5.5.56

**PHP version:** 7.1.11
Modules loaded: Core, date, libxml, openssl, pcre, zlib, filter, hash, Reflection, SPL, session, standard, apache2handler, bz2, calendar, ctype, curl, dom, mbstring, fileinfo, ftp, gd, gettext, iconv, intl, json, ldap, exif, mcrypt, mysqlnd, PDO, apcu, posix, shmop, SimpleXML, sockets, sqlite3, sysvmsg, sysvsem, sysvshm, tokenizer, xml, xmlwriter, xsl, mysqli, pdo_mysql, pdo_sqlite, wddx, xmlreader, apc, smbclient, zip, Phar, libsmbclient, Zend OPcache

**LibreOffice Online version:** Collabora Online 2.1.5

**Nextcloud version:** 12.0.4 - 12.0.4.3

** richdocuments version:**  1.12.40