Github bug #307: add storage pool type list - JS changes

The changes in ui/js/src/kimchi.storagepool_add_main.js were made
to relieve the storage pool type dropbox from the return of the
ajax call to retrieve the available partitions of the host.

The dropbox will always have all the options displayed. In case
of the LOGICAL pool type the user won't be able to proceed with
the creation of the pool if no partitions are found. A message
is being displayed to warn the user.

Signed-off-by: Daniel Henrique Barboza <danielhb@linux.vnet.ibm.com>
Github bug #307: storage pool type list - html and string changes

This patch contains changes in ui/pages/storagepool-add.html.tmpl to
reflect the new behavior of the page. A message saying "Loading ..."
with the loading.gif picture is now displayed in the LOGICAL
frame when there are no partition data yet. When partition data
arrives, the view is displayed normally. If no partition data is
available a warning message is displayed instead.

The new strings were added in ui/pages/i18n.html.tmpl and the .po
files were update by using 'make -C po update-po'.

Signed-off-by: Daniel Henrique Barboza <danielhb@linux.vnet.ibm.com>