Updates deprecated alias run_server and removes restrictions on dataframe add track workflow

[carolinebridge]

• Updates deprecated alias Dash run_server to Dash run
• removes restrictions on df add track workflow that prevented "out of the box" bigWig files from computing properly

Users can now convert their BigWig data to a dataframe and load it directly into the library without having to change their headers or datatypes.

[cmdcolin]

are there any limits on the size of bigwig that can be loaded? it is still using truncate?

one interesting feature of bigwigs is they do have different "zoom levels" built in and the higher zoom levels have way less data, it would be cool if we could plot those directly from the data frame

[cmdcolin]

probably good to go otherwise though, will just go ahead with merge