 masiv_plugin.update incorrectly reports update time but update is processed correctly

```
>> masiv_plugin.update('~/.masiv_plugins/neuriteTracer')
Checking if plugin neuriteTracer is up to date on branch master
Found an update for plugin "neuriteTracer". New update is from 2016-10-08 at 11:30:02
Plugin "neuriteTracer" updated
```
However, the plugin was last updated on 2017-01-05