i18n_tool: shift everything 4 spaces to the right
i18n_tool: shift everything 4 spaces to the right

So it is properly aligned as class methods. Only whitespace
modification and the class I81NTool(object) added to look
consistent.

heartsucker/securedrop,ehartsuyker/securedrop,heartsucker/securedrop,conorsch/securedrop,ehartsuyker/securedrop,conorsch/securedrop,ehartsuyker/securedrop,conorsch/securedrop,ehartsuyker/securedrop,heartsucker/securedrop,heartsucker/securedrop,conorsch/securedrop,ehartsuyker/securedrop,conorsch/securedrop,ehartsuyker/securedrop,heartsucker/securedrop