Add Politician missing fields

[mjlescano]

Bio

For a brief description of the politician. Somthing like twitter's Bio.

Party

e.g.: Coalición Cívica

Social Contact

The PoliticianSchema should have something like:

{
  // ...
  social: [{
    value: String
    media: {
        type: String,
        enum: ['facebook', 'email', 'twitter', 'linkedin']
    }
  }]
  // ...
}

Meant to populate this links on profile view:

Comissions

To show a list of the comissions she/he belongs.

Bills

To show a list of the bills she/he participated. Beign an author o cosigning it, or editing it.