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to parse_institution_xml

time in the past...

rather from settings.

Simplify some things in that script, while we're at it.

South migrations: add PostgreSQL issue workaround

Add workaround for an issue with running South Migrations on PostgreSQL.

Migration 0022_auto__chg_field_institutiondetails_number_id__del_field_instrealmmon_i.py breaks on PostgreSQL with:

ERROR:  column "realm_id" cannot be cast automatically to type integer
HINT:  Specify a USING expression to perform the conversion.
STATEMENT:  ALTER TABLE "edumanage_instrealmmon" ALTER COLUMN "realm_id" TYPE integer,
            ALTER COLUMN "realm_id" SET NOT NULL, ALTER COLUMN "realm_id" DROP DEFAULT;
This is a known problem: http://south.aeracode.org/ticket/484
(PostgreSQL will not automatically convert and conversion must be provided with the USING clause)
Workaround: For PostgreSQL invoke a direct SQL statement amended with a USING clause to do the converion explicitly.

Rely on db._get_connection().vendor to determine if we are running on PostgreSQL.

Credits:
* Workaround via db.execute:
  http://codeinthehole.com/writing/altering-postgres-table-columns-with-south/
* USING syntax to convert integers:
  http://stackoverflow.com/questions/13170570/change-type-of-varchar-field-to-integer-cannot-be-cast-automatically-to-type-i

Update requirements.txt to Django 1.4.22

Django 1.4.22 (latest in the 1.4 branch) fixes issues with running in the
English locale without explicit English translations compiled.

thus be more suitable for crontab use.

for language aware collation

Rather risky stuff, definitely revisit...

redirects

- Link to the CAT IdP management page
- Show the public CAT IdP page URL as text
- Show applier e-mail if name is empty

Also correct a spelling mistake in models