Fix application ZIP file name

In installation and update procedure.
FLATPAGES_POLICY_PAGE appeared twice and should be in STATIC PAGE part of settings.
Merge pull request #261 from camillemonchicourt/patch-3

Fix application ZIP file name
Merge pull request #262 from camillemonchicourt/patch-4

Fix FLATPAGES_POLICY_PAGE setting
Prevent emails to be sent twice on synchronization errors
Added descent icon in detail view
Added missing svg icon
Generated .po files with make all_makemessages
Clean-up changes in locale files
Translate new terms only
Add setting and update changelog
Merge branch 'master' into v1.X

Conflicts:
	CHANGES.rst