Move wot_lookup() exceptions handling in higher level functions

wot_lookup() exits on an error (typically an identity not found).

Errors should be managed in higher-level functions to allow specific exit messages.

assigned to @matograine

mentioned in commit 376db52b

mentioned in commit a6eec212

mentioned in commit 03d04fa2

mentioned in commit c791d3fd

added Network enhancement labels

changed milestone to %0.10.0

mentioned in merge request !170 (merged)

mentioned in commit 5fdfe689

mentioned in commit b2e40e88

mentioned in commit 6ec34b20

mentioned in commit d8428f59

mentioned in commit 92b41dec

mentioned in commit 9fd13edb

mentioned in commit 84a3d7b7

mentioned in commit 5dac2ae0

closed with merge request !170 (merged)

changed title from handle wot_lookup() errors in higher level functions to Move wot_lookup() exceptions handling in higher level functions