Bug 11701: Unit tests for C4::Context::Zconn

TEST PLAN
---------
1) apply patch
2) run koha qa test tool
3) prove -v t/Context.t

Unit tests ran as expected.

Signed-off-by: Mark Tompsett <mtompset@hotmail.com>
Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>
Bug 11701: (follow-up) move unit tests to t/db_dependent

The new tests will not function if there isn't a valid
configuration (or mocking of preference()) so this patch
moves them to t/db_dependent/Context.t.

To test:

[1] After applying the main patch for this bug, verify that
    prove -v t/db_dependent/Context.t passes.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>
Bug 11701: Fix C4::Context::Zconn

When calling C4::Context::Zconn twice with different parameters,
the same ZOOM::Connection object is returned twice (parameters
of 2nd call are not used) This patch fixes that.

This is in part because the connection cache is keyed on server
name only. This patch corrects this by keying on all parameters.

TEST PLAN
---------
1) apply patch
2) run koha qa test tools
3) prove -v t/Context.t

The unit tests properly triggers the modified routine for
testing. Additionally, in hunting for ways it could break,
no nested synchronous or asynchronous Zconn's were found.
And even if they were, the keying on all parameters should allow
it to function properly without messing up the other connection.

Signed-off-by: Mark Tompsett <mtompset@hotmail.com>
Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>
Bug 11939: set active currency when using English sample data

This patch offers a better default for currencies,
with USA dollar as default active currency.

To test the patch:
1)Install master without the patch, during web installation
select 'parameters.sql' file
2)Finish install and go to Administration -Currencies & Exchange rates
3)No active currency

4)Install master with this patch, during web installation
 select 'parameters.sql' file
5)Finish install and go to Administration -Currencies & Exchange rates
6)Now USA dollar is the active currency

NOTE: This does solve the problem of everything being NULL for active,
      and lacking an active value. It also corrects the description
      of the optional item to check related to currencies.

Signed-off-by: Mark Tompsett <mtompset@hotmail.com>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Works as described, passes all tests and QA script.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>
Bug 11939: set active currency for non-English sample data

Revised Test Plan
-----------------
The following SQL commands were used to test this.

installer/data/mysql/en/optional/parameters.sql is part of the
first patch and didn't really need testing again.

installer/data/mysql/de-DE/optional/parameters.sql is not part
of the patch, but since I was playing with the script, which
is also attached here, it was included for good measure.

use kohadata;
SET FOREIGN_KEY_CHECKS=0;
TRUNCATE currency;
source /home/mtompset/kohaclone/installer/data/mysql/pl-PL/optional/parameters.sql
SET FOREIGN_KEY_CHECKS=0;
TRUNCATE currency;
source /home/mtompset/kohaclone/installer/data/mysql/es-ES/optional/parameters.sql
SET FOREIGN_KEY_CHECKS=0;
TRUNCATE currency;
source /home/mtompset/kohaclone/installer/data/mysql/ru-RU/optional/sample_currency.sql
SET FOREIGN_KEY_CHECKS=0;
TRUNCATE currency;
source /home/mtompset/kohaclone/installer/data/mysql/uk-UA/optional/sample_currency.sql
SET FOREIGN_KEY_CHECKS=0;
TRUNCATE currency;
source /home/mtompset/kohaclone/installer/data/mysql/it-IT/necessari/parameters.sql
SET FOREIGN_KEY_CHECKS=0;
TRUNCATE currency;
source /home/mtompset/kohaclone/installer/data/mysql/de-DE/optional/parameters.sql
SET FOREIGN_KEY_CHECKS=0;
TRUNCATE currency;
source /home/mtompset/kohaclone/installer/data/mysql/nb-NO/2-Valgfritt/parameters.sql
SET FOREIGN_KEY_CHECKS=0;
TRUNCATE currency;
source /home/mtompset/kohaclone/installer/data/mysql/en/optional/parameters.sql

Signed-off-by: Mark Tompsett <mtompset@hotmail.com>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>