By Jeremy Gaunt ATHENS (Reuters) - Alexis Tsipras, his re-election victory still warm, received congratulations from across Europe on Monday that carried an underlying message: "Now get on with it". The "it" is reforming the Greek economy as laid out in an 86-billion-euro (62.32 billion pounds) bailout that Tsipras agreed in July before calling a snap election. There is clearly an underlying concern in European capitals that Tsipras, in a strong position at home, may renege on some of the reforms tied to the bailout, particularly given how reluctantly he agreed to it.