[MOD] Modify {tr} so that _0, _1 etc. be used instead of 0, 1 for variable content in translations... (This is required for Smarty3 upgrade)
[FIX] Fix some templates syntax to be compatible with both Smarty3 and Smarty2
[FIX] Fix somme missing php function in smarty secure mode.
All templates were check with the syntax checker in Smarty2 and Smarty3