Modified function to not check duplicated VATs when partner type is plan
Now the partner created for each plan takes the same vat and document_type_id as the plan grouper

Added 'oncascade' to delete all related attention points when removing a plan

Added main_insurance_plan_id field for roll_import module when plan is not detailed in the roll

Now the res.partner is a insurance_grouper
Each plan has an associated res.partner
Modified views, grouper view is a simplified view of the plan partner one
Modified views names, 'health insurances' is now 'Groupers' and 'Health Insurance Plans' is now 'Health Insurances'

Added requires_plan field

Improved create function to not generate KeyError anymore

Removed health attention point tab and added One2many in insurance plan view

Added health_attention_point model and it's view
Added translations

Modified the default partner type for res partners, now its 'sofsa_user'
Modified the way ref field is setted

Modified function to generate ref

Removed prefix from sequence
Corrected computation of ref

Added default for partner_type
Added partner_type to base form view of res_partner

Added a sequence for insurnace's refs

Added pami and jerarquicos as data
Modified health insurance and added fields for the insurances

Removed boolean fields use

Deleted boolean field 'is_insurance' and replaced it with a Selection.