Webin CLI wrapper

the submission of genome assemblies using the [Webin-cli](https://github.com/enasequence/webin-cli)

This is a Galaxy wrapper for webin cli tool from ENA.

Setting up credentials on Galaxy

Enable users to set their own credentials for this tool. To enable it, make sure the file config/user_preferences_extra_conf.yml has the following section:

ena_webin_account:
    description: Your ENA Webin account details
    inputs:
        - name: webin_id
          label: ENA Webin ID
          type: text
          required: False
        - name: password
          label: Password
          type:  password
          required: False