save current locale in mailboxes table on login operation
set locale after provision the mailbox
remove folders_names table, it was useless
fix get_fid_by_name filtering by mailbox
support multilanguage with hardcoded translations on code
get folders names from openchangedb mysql backend
update folder's name when mailbox's locale changes
fix get_SystemFolderId to avoid special folders with same systemIdx

We will select the folder without parent first.
This happens for SystemIdx 2,3,4 (Notes, personal address book,
personal calendar, we don't want those)
really bad idea constant with arithmetic on it
Translate mailbox display name
better change of display names when locale changes
Merge pull request #17 from Zentyal/jgarcia/i18n-mailboxes

i18n mailboxes