Note MonetDB setup in Readme, add couple of items to requirements.

psycopg2 isn't strictly required, but needed if using postgres.
astropy is an un-specified pre-requisite for APLpy, which is annoying.
fix scatterplot when no sources
Agg mpl backend works better
Merge pull request #2 from timstaley/master

Require aplpy 0.9.8
500 view was moved
make monetdb optional
merged
fix link to runningcatalog
Link to Simbad cone search

On transient and runningcatalog pages. Address #4671.
Return nothing if FITS file is not available

Cleaner/easier to read than throwing all the time, I think.
Tweak layout so labels don't fall outside image
Fix formatting of lightcurve graph

This should cure the overlapping labels problem.

I've removed the argument to set T0 (the origin of the time axis) for this
plot, since it didn't seem to be used anywhere. Happy to resurrect it if
anybody has a use case.
Fix typo
Fix inconsistent capitalization
Restore T0 argument to transient_plot
Merge pull request #4 from jdswinbank/formatting

Formatting
Merge pull request #3 from jdswinbank/iss4671

Link to Simbad cone search
Merge remote-tracking branch 'gijzelaerr/pr/1'

Conflicts:
	requirements.txt
Squelch wandering minus signs
restructure views layout for clarity