Added entries to the species list where the identification is not certain.

Updated the list of species to include entries where the identification is
not certain, for example Willow Warbler/Chiffchaff or where only
identification at the genus level is possible, e.g. Skua sp.

Resolved the list of species issues.
Added a script to initialize the database.

The initdb.sh is a bash shell script that contains the commands from
the csvkit and csvimport packages to load all the reference data into
the database. This replaces the fixtures used for the demo site.
Fixed relationships between species and rank and species_group.

Updated the list for Portugal (list_pt column) in SpeciesGroup to fix
the foreign key relation with Species when the data are loaded into the
database using csvimport.

Added Portuguese translations.
Increased length of language name fields in Age and Sex.
Completed species list for (mainland) Portugal.

Using the species and species group reference data using the list published
by Sociedade Portuguesa para o Estudo das Aves (SPEA) hosted on bubo.org.
Kept species not on the SPEA list since these included escapes or feral
species not formally recognized.
Replaced codes in data files with slugs.

Also removed ages not used in the demo so that now it only contains
ages used when loading checklists from eBird.
Added reference data for Activity and Protocol.
Added script to initialize map with names used when loading ebird checklists.