encode user id in OwnCloudClient.getFilesDavUri(String)

usernames containing spaces cause serious issues up to denying logins and syncs - making the whole app unusable while the same id works using the web gui.

Signed-off-by: mutec <[email protected]>

src/main/java/com/owncloud/android/lib/common/OwnCloudClient.java

@@ -297,7 +297,7 @@ public void setDefaultTimeouts(int defaultDataTimeout, int defaultConnectionTime
     }
 
     public String getFilesDavUri(String path) {
-        return getDavUri() + "/files/" + userId + "/" + WebdavUtils.encodePath(path);
+        return getDavUri() + "/files/" + getUserId() + "/" + WebdavUtils.encodePath(path);
     }
 
     public Uri getFilesDavUri() {