Cleanup shebang and executable bit

- Add missing executable bits to all scripts
- Remove executable bits from all files that are not scripts,
  e.g. js, html, and Python libraries.
- Remove Python shebang from all Python library files.

It's frown upon to have executable library files in site-packages.

Signed-off-by: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Armando Neto <abiagion@redhat.com>

ipaserver/dnssec/localhsm.py

@@ -1,4 +1,3 @@
-#!/usr/bin/python3
 #
 # Copyright (C) 2014  FreeIPA Contributors see COPYING for license
 #

ipaserver/dnssec/odsmgr.py

@@ -1,4 +1,3 @@
-#!/usr/bin/python3
 #
 # Copyright (C) 2014  FreeIPA Contributors see COPYING for license
 #

ipaserver/install/ipa_kra_install.py

@@ -1,4 +1,3 @@
-#!/usr/bin/python3 -E
 # Authors: Ade Lee <alee@redhat.com>
 #
 # Copyright (C) 2014  Red Hat

ipaserver/setup.py

@@ -1,5 +1,3 @@
-#!/usr/bin/python3
-
 # Authors:
 #   Jason Gerard DeRose <jderose@redhat.com>
 #