Fix signature of oauth1_server:initiate_args_of_params/2
Allow parameter values to mix integers with binaries.

Temporarily, until validation and transformations of parameters is
encapsulated.
Tidy-up "dialyze" recipe.
Make "dialyze" recipe depend on "test".

To make sure tests are compiled and ready to be analyzed.
Implement "Authorization" header parsing.
Test "Authorization" header parsing.