Completed functionality of issue #938 and fixed bugs #935 and #941

[Onariaginosa]

Completed the issues mentioned in #938 and shifted to pug (was necessary to run branch on beta, branch Onariaginosa is on jade still just in case I need to revert) Also fixed bug in #935 so that when the user selects export unweighted, they get an unweighted graph. Fixed bug in #941 so that the graph displays properly when you change the bottom data set to Expression data within the database first, then change the top data set to Expression data that requires a query to the database.

Pull Request Checklist

• [x] Travis C.I. build passes
• [x] All four Demos look as expected when loaded
• [x] Reload works as expected
• [x] Loading file with Error brings up error modal, and it looks as expected
• [x] Loading file with Warning brings up warnings modal
• [x] Import works for both SIF and GraphML
• [x] Graph can be exported to SIF and GraphML
• [x] Print works as expected
• [x] Restrict graph to viewport works as expected (check/uncheck)
• [x] Viewport Size Changing works as expected (small/medium/large/fit)
• [x] Toggle between Grid Layout and Force Graph Layout works as expected
• [x] Force Graph Parameter Sliders change the number above them and have an effect on the graph
• [x] Locking/Unlocking/Resetting/Undo Resetting the force graph parameters works as expected
• [x] Enabling and disabling node coloring works as expected
• [x] Node coloring options work as expected (selection top/bottom dataset, averaging values, changing max value)
• [x] Weighted graph loaded with the "Enable Edge Coloring" option checked appears as expected
• [x] Hide/Show Weights works as expected (always/never/upon mouseover)
• [x] Edge Weight Normalization Factor can be changed (set/reset)
• [x] Gray Edge Threshold can be changed, slider changes the number and has an effect on the graph
• [x] Checking Show Gray Edges as Dashed works as expected (check/uncheck)
• [x] D-pad left/right/top/bottom/center works as expected
• [x] Zoom slider changes number and has effect on graph (viewport and menu)
• [x] Right click on a node opens gene page, page is populated with correct data

[ahmad00m]

@ahmad00m went through the check list and determined everything is working except for the export function to SIF and GraphML. I believe they are correctly exported but they don't have the correct graph upon import (their node coloring is turned off). Also, I'm not sure if reload is doing what it is supposed to do which I will further discuss during the meeting. On the other hand, the excel export works just fine.