Relative Time change

Calling relative time outside of the $modsettings conditional will cause JS errors due to undefined strings (rt_xys language was not defined) which halts other JS from running in some browsers

I move the text strings to an js object, not sure why but I did, and then called the relative time function after that.
Also moved it to a addInline using deferred vs $context{'javascript_vars'] I don't think that will cause any problems!

@emanuele45  thats for you to check over, not sure I broke something else :innocent: 

Signed-off-by: Spuds <spuds@spudsdesign.com>