fix ignoring -p switch when `-p 12345`

Signed-off-by: Thomas Stilwell <stilwellt@openlabs.co>
Call search_for_my_node in a delayed callback in the ioloop

* search_for_my_node needs to be called after a handshake with a seed is done
* Check every second on start if at least one connection is done before calling
search_for_my_node
intersect peers
Merge pull request #804 from benemorius/default-port-fix

fix ignoring -p switch when `-p 12345`
Merge pull request #781 from yagoulas/search_on_start

Search for myself upon starting up