Updated docs structure according to directives

Moved the feature configuration file from /userguide to /installationprocedure
Adjusted two file names, feature.configguide.rst -> feature.configuration.rst
feature.userguide.rst -> feature.usage.rst

Change-Id: Id8e6377cc6ae617352eefc29ecc6aa901adc24ef
Signed-off-by: Sofia Wallin <sofia.wallin@ericsson.com>
(cherry picked from commit e6c979099c3c50395841be993f326952ee62cabf)

diff --git a/docs/userguide/feature.configguide.rst b/docs/installationprocedure/feature.configuration.rst
similarity index 100%
rename from docs/userguide/feature.configguide.rst
rename to docs/installationprocedure/feature.configuration.rst

diff --git a/docs/userguide/feature.userguide.rst b/docs/userguide/feature.usage.rst
similarity index 100%
rename from docs/userguide/feature.userguide.rst
rename to docs/userguide/feature.usage.rst