LP1147286 - Allow translating more of the staff client portal page.

Add translatable strings for image alt-tags and the Search button on
the staff client portal page.

Signed-off-by: Pasi Kallinen <pasi.kallinen@pttk.fi>
Signed-off-by: Ben Shum <bshum@biblio.org>
.gitignore additions for (new) generated files

Add these to Evergreen .gitignore:

Open-ILS/examples/apache/eg.conf
Open-ILS/examples/apache/eg_startup
Open-ILS/examples/apache/eg_vhost.conf
Open-ILS/src/support-scripts/eg_db_config

Signed-off-by: Bill Erickson <berick@esilibrary.com>
Signed-off-by: Ben Shum <bshum@biblio.org>