Recreated #3003 which was closed for some reason

Move search positions and layout to session.conf

This will remember the x,y positions as well as the find/replace dialog expanders as part of session.conf.

To implemenet this, a new interface configuration_add_session_group() is created that connects a StashGroup to session.conf. You can view, comment on, or merge this pull request online at:

https://github.com/geany/geany/pull/3014

-- Commit Summary --

* session.conf split follow-up #3

-- File Changes --

M src/keyfile.c (68) M src/keyfile.h (2) M src/search.c (5)

-- Patch Links --

https://github.com/geany/geany/pull/3014.patch https://github.com/geany/geany/pull/3014.diff