[freemobile] Convert module from old to new website
After the new website was launched, the module was not properly functioning (#447 (closed)).
This commit handles the new website for the CapDocument, CapProfile and CapMessagesPost
capabilities.
Note: methods iter_documents_history()
and get_details()
have not been implemented
as I don't really know what they are about.
Closes #447 (closed)