Writing out mmcif file of the final structure for display with NGL

A small change to support viewing structures in the dashboard.

Fixed small error with requirements

Causing problems in the documentation runs for other modules.

Adding support for 'special' parameters with custom widgets

Add a 'special' kind for parameters and the ability to specify custom widgets. This is used for the control properties in LAMMPS dynamics.

Support for the JobServer.

Merge pull request #73 from molssi-seamm/feature-job-submit

Changes in support of running jobs via the JobServer.

Added plotting capabilities.

Consolidating a number of changes, but the noticeable user visible change is the addition of Plotly plots, which are currently used in LAMMPS.

Added correct SEAMM images

Merge pull request #70 from molssi-seamm/bugfix

Fixing up images!

End of 2019

This release contains the fixes for the "Cancel" button problem, wherein clicking Cancel did not update the GUI.

Updated background image and names to SEAMM

The artwork was out fo date, plus there are issues running from the GUI so removed that until we can decide how to do it properly.

Handling home directory paths correctly.

For run_flowchart, there was an error if the datastore referenced the home directory as '~'

Datastore enhancements

This adds control when running a flowchart to

• Specify the datastore to use
• Give one or more projects
• Give the job a title
  Sequential job numbers are used within a datastore to give each job a unique name. This release also adds job metadata in the file 'job_data.json' at the top level of the job directories.