UI - Misc Fixes 4

[wcgunter]

This PR changes the following:

• Deployments: Icon buttons now have hover over text

• Processes: Copy button next to input/output variables will always stay with the variable (won't move rows)

• History: End time row no longer contains duration

• History: Input/output variables formatting: consistent location of output & copy buttons

• History: Download icon hover text now says "Download" instead of "Copy"

• History: Output variables now have their types displayed again

• History: Updated wording of filter radio buttons to more accurately describe their behavior

• All: Confirmed that all libraries are stored and loaded locally. The only thing loaded from the internet would be an image URL in an input/output variable
• All: Updated localStorage variable username from "username" to actually use the current user's username

[jamesfwood]

Awesome work!