Make MultilingualTranslations.mtID unsigned
Save translations to all sections

Not just to the first one
Merge pull request #1669 from mlocati/first-multilingual-fixes

First multilingual fixes
Add some help to translators for '%s (%s, %s)'

Let's tell translators what are those %s, allow them to change their order,
and assign a translation context to avoid clashes with other translations.
seconds instead of minutes when setting cookie
Merge pull request #1671 from mlocati/first-multilingual-fixes

Add some help to translators for '%s (%s, %s)'
Merge pull request #1673 from Remo/patch-1

seconds instead of minutes when setting cookie
Fix
Merge branch 'develop' of github.com:concrete5/concrete5-5.7.0 into develop
Fix #1515
Fix #1413
Fix #1523
Lots of fixes to conversation overrides
adding conversation config
Fix #1493