ssh: add few explanation text about two step addition of generated keys.

Based on feedback from customers.

rhodecode/templates/admin/my_account/my_account_ssh_keys.mako

@@ -67,6 +67,9 b''
                       ${h.submit('save',_('Add'),class_="btn")}
                       ${h.reset('reset',_('Reset'),class_="btn")}
                     </div>
+                    % if c.default_key:
+                        ${_('Click add to use this generate SSH key')}
+                    % endif
                 </div>
             </div>
             ${h.end_form()}

rhodecode/templates/admin/users/user_edit_ssh_keys.mako

@@ -62,6 +62,9 b''
                       ${h.submit('save',_('Add'),class_="btn")}
                       ${h.reset('reset',_('Reset'),class_="btn")}
                     </div>
+                    % if c.default_key:
+                        ${_('Click add to use this generate SSH key')}
+                    % endif
                 </div>
             </div>
             ${h.end_form()}

rhodecode/templates/admin/users/user_edit_ssh_keys_generate.mako

@@ -31,10 +31,11 b' chmod 0600 ~/.ssh/id_rsa_rhodecode_acces'
         <input type="text" value="${c.public}" class="large text" size="100"/>
         <p>
             % if hasattr(c, 'target_form_url'):
-                <a href="${c.target_form_url}">${_('Add this generated key')}</a>
+                <a href="${c.target_form_url}">${_('Use this generated key')}.</a>
             % else:
-                <a href="${h.route_path('edit_user_ssh_keys', user_id=c.user.user_id, _query=dict(default_key=c.public))}">${_('Add this generated key')}</a>
+                <a href="${h.route_path('edit_user_ssh_keys', user_id=c.user.user_id, _query=dict(default_key=c.public))}">${_('Use this generated key')}.</a>
             % endif
+            ${_('Confirmation required on the next screen')}.
         </p>
     </div>
 </div>