Use resolution calculator to define dqx/dqy for fit page (Trac #1271)

[pkienzle]

A proper estimate of resolution requires too many details about the experiment configuration for the fitting panel. Could we perhaps attach it to the Q resolution estimator window that we already have?

Migrated from http://trac.sasview.org/ticket/1271

{
    "status": "new",
    "changetime": "2019-03-29T18:02:39",
    "_ts": "2019-03-29 18:02:39.177442+00:00",
    "description": "A proper estimate of resolution requires too many details about the experiment configuration for the fitting panel. Could we perhaps attach it to the Q resolution estimator window that we already have?",
    "reporter": "pkienzle",
    "cc": "",
    "resolution": "",
    "workpackage": "SasView GUI Enhancements",
    "time": "2019-03-29T18:02:39",
    "component": "SasView",
    "summary": "Use resolution calculator to define dqx/dqy for fit page",
    "priority": "major",
    "keywords": "",
    "milestone": "SasView 5.1.0",
    "owner": "",
    "type": "enhancement"
}

[pkienzle]

See comments in PR #209. Concerns were TOF instruments, Bonse-Hart instruments, and gravity effects.