Add other salary data

[astrochun]

I recently got a CSV table of salary for FY 2012, 2014, 2015, 2016, and 2017.

Note that:

• We will need to split out each fiscal year
• Column names will be to be changed
• Salary columns is formatted with $ and spaces. This need to be simplified to numerical values only.
• State fund ratio is provided as percentile. Let's convert this to decimal for consistency

This was provided by @dlebauer.


[astrochun]

To incorporate this data, we need to get fiscal hours for each year. Here's what I found:
2016-17: 2088 hr. See this PDF
2015-16: 2096 hr. See this PDF
2014-15: 2088 hr. See this PDF
2013-14: 2088 hr. There was no PDF, so I did my own calculation

[astrochun]

There are some data wrangling needed for this combined datasets:

1. It seems FY2014-15 and FY2015-16 are identical. Note that FY2015-16 was not available from Daily WildCat so I think this is a mistake (will exclude)
2. Some contents are missing such as College Location. As such, there are many NaN for some year. Specifically FY2013-14, FY2014-15, FY2015-16,