Format numbers on index stats

[runningman84]

the current stats look fine:

Primary shard operations

Index:
    111,750,727 ops (took 7 hours) 
Flush:
    140 ops (took 4 minutes) 
Merge:
    517 ops (took 2 hours) 
Query:
    89 ops (took a minute) 
Fetch:
    23 ops (took a few seconds) 
Get:
    11 ops (took a few seconds) 
Refresh:
    563 ops (took 14 minutes) 

Total shard operations

Index:
    223,483,689 ops (took 14 hours) 
Flush:
    280 ops (took 8 minutes) 
Merge:
    1,130 ops (took 4 hours) 
Query:
    176 ops (took 3 minutes) 
Fetch:
    44 ops (took a few seconds) 
Get:
    24 ops (took a few seconds) 
Refresh:
    1,122 ops (took 28 minutes) 

but old stats arent't formatted likewise:

 graylog2_25 Contains messages up to an hour ago Load Details / Actions
Range re-calculated 2015-02-17T08:21:53.000Z in 1005ms. 4 segments, 0 open search contexts, 0 deleted messages
Primary shard operations

Index:
    130.494.640 ops (took 29441) 
Flush:
    196 ops (took 263) 
Merge:
    747 ops (took 16205) 
Query:
    203 ops (took 200) 
Fetch:
    65 ops (took 0) 
Get:
    13 ops (took 0) 
Refresh:
    1.801 ops (took 2056) 

Total shard operations

Index:
    260.989.280 ops (took 58810) 
Flush:
    392 ops (took 516) 
Merge:
    1.627 ops (took 32684) 
Query:
    400 ops (took 399) 
Fetch:
    125 ops (took 0) 
Get:
    30 ops (took 0) 
Refresh:
    3.602 ops (took 4118) 

this happens in 1.0.0rc4