Allow erasing of personal note on server

This is the "release" part of fix for #4163.
fix #4164: error when no log present for an Okapi cache
Update changelog_release.xml
fix #4165: avatar no longer recognized
fix #4166: inconsistent labels for non-event cache
Never block when building a cache/waypoint details creator

Blocking on the UI thread may prevent other looper threads from
executing, including the ones in charge of receiving the location
updates. This may lead to deadlocks when, for example, starting cgeo
from a cache URL if cgeo has not been started before.
Fixes #3843, Action Bar: Secondary navigation tool?

- added an action provider that handles the long click and redirects to secondary default navigation
Fixes #3843, Action Bar: Secondary navigation tool?

- added an action provider that handles the long click and redirects to secondary default navigation