Removed unused variables and outdated comments
Simplify call to getValue when called with 2 parameters

If func_num_args() is 2 then we can avoid call_user_func_array
and call $av->getValue() directly (that's faster)
Fix outdated cache after saving tracking codes
class added to login form

it's a bit tricky to style the login form since we don't have a
class. This PR adds a class, no sure about the official name
conventions here but it makes styling much easier.
Merge pull request #1360 from Remo/patch-53

class added to login form
Merge pull request #1358 from ojalehto/fix/tracking-codes/fix-outdated-cache-after-saving-tracking-codes

Fix outdated cache after saving tracking codes
Merge pull request #1342 from mlocati/patch-4

Simplify call to AttributeValue::getValue when UserInfo::getAttribute() is called with 2 parameters
Merge pull request #1329 from ojalehto/refactor/libraries/view/remove-unused-variables

Remove unused variables and outdated comments