initial commit of basic seahorse task stubs. linking not yet established.
added backup-keys.page and passwords-create-secure-passphrase.page stubs
drafted more seahorse help topics
added several more page stubs.
docs - removed copyright tag from each documentation page.
docs - drafted initial structure of the help index
updated stubs to reflect proposed linking structure
added 2column style to the last index section
moved pages to help/C/ directory to better reflect structure within repo.
docs: updated index to reflect new Passwords and Keys application name.
docs: added seahorse icon and modified the index page to include the icon.
docs: added page about certs. initial draft of ssh-key description.
docs: added draft to explain public vs private keys.
Merge branch 'master' of github.com:j1mc/seahorse-help

pushing to github repo