Define min()/max()/round() in application.h for back compatibility.
Can be disabled by setting SPARK_APP_USES_STD_NAMESPACE

Signed-off-by: David Greaves <david.greaves@jolla.com>
Unit test to verify min()/max()/round() are accessible when using application.h

Signed-off-by: David Greaves <david.greaves@jolla.com>
Fix SpartParty.cpp unit test which uses 'log' which conflicts with <cmath>
Set CPPFLAGS differently in TEST to allow exceptions to be thrown

Signed-off-by: David Greaves <david.greaves@jolla.com>