Release 0.38.0

Welcome to Zotonic 0.38.0, released on 2 April, 2018.

Main changes are:

Fixed session cookies missing secure attribute when TLS is terminated by a proxy (1889).
Fixed hassubject and hasobject query term parsing (1894, 1896).

Commits since 0.37.0

There were 10 commits since release 0.37.0.

Big thanks to all people contributing to Zotonic!

Git shortlog

David de Boer (2):

mod_search: Fix hassubject and hasobject query term parsing (#1894)
mod_search: Fix #1895 by also splitting non-binaries (#1896)

Marc Worrell (8):

mod_admin_category: fix a problem with deleting pages in a category.
Fix messages on category delete error.
Lock new z_stdlib
Lock new z_stdlib
Lock new z_stdlib
core: sanitize pivot text before stemming/tsvector. This fixes an issue where illegal utf8 could crash the pivot process.
mod_import_wordpress: better image handling. With thanks to @fredpook
Set session cookie to secure if site protocol is https. Fixes #1889 (#1890)