Hi,

For master commit: 07f2eca7e9f9163ec48d3a417d8ba885a84762f3, the manage.py loadconf command doesn't work with the toasterconf.json file for the remote use case uploaded on wiki.

Wiki file: https://wiki.yoctoproject.org/wiki/images/d/d5/Toasterconf.json.txt.patch

Steps to reproduce:

1. Clone poky;
2. Start toaster in managed mode: bitbake/bin/toaster
3. If asked to import configuration file from ...meta-yocto/conf/toasterconf.json, do not import it
4. Let toaster managed mode to fully start and then stop it (Ctrl-C)
5. cd bitbake/lib/toaster
6. run command: ./manage.py loadconf /path/to/the/toasterconf_from_wiki.json

Traceback output:

$ ./manage.py loadconf --verbosity=3 --traceback /home/ionut/Downloads/toasterconf.json 
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 222, in run_from_argv
    self.execute(*args, **options.__dict__)
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 255, in execute
    output = self.handle(*args, **options)
  File "/home/ionut/work/poky_1.8/poky/bitbake/lib/toaster/bldcontrol/management/commands/loadconf.py", line 171, in handle
    self._import_layer_config(filepath)
  File "/home/ionut/work/poky_1.8/poky/bitbake/lib/toaster/bldcontrol/management/commands/loadconf.py", line 84, in _import_layer_config
    if _get_id_for_sourcetype(lsi['sourcetype']) == LayerSource.TYPE_LAYERINDEX or lsi['apiurl'].startswith("/"):
  File "/home/ionut/work/poky_1.8/poky/bitbake/lib/toaster/bldcontrol/management/commands/loadconf.py", line 25, in _get_id_for_sourcetype
    raise Exception("Could not find definition for sourcetype " + s)
TypeError: cannot concatenate 'str' and 'int' objects

Cheers,
Ionut C