Recursive channel,json search

Module now supporting recursive search and default channel.json on containers/channel.json.

Example:
Channel  *E* on /A/B/C/D/E

Will search in:
  1. /A/B/C/D/E/channel.json
  2. /A/B/C/D/channel.json
  3. /A/B/C/channel.json
  4. /A/B/channel.json
  5. /A/channel.json

And finally on /containers/channel.json
If nothing was found it will map to default list and detail as wrote [here] [1]

[1]: http://www.oppsproject.org/en/latest/template_customization.html#channel-conf