Clean up labels on axis

[vipulnaik]

Too much label overlap at https://analytics.vipulnaik.com/?start_date=2017-01-01&end_date=2017-12-31

@riceissa sez: "i think the standard solution is to rotate the labels a bit"

[riceissa]

On my local machine, the labels look fine, probably because I am using a newer version of matplotlib:

I added a 45 degree rotation. I'm not sure if this will fix it (you might need to tweak the rotation) because I haven't reproduced the issue locally. If the rotation doesn't work, I can download your version of matplotlib and try to reproduce the error.

[riceissa]

It looks fine to me now, so I'm closing this.