App option for `advanced mode` (Trac #143)

[cfobel]

Add setting in app options to enable advanced menu items, etc. for debugging and prototyping, while not cluttering the main user interface.

For now, the option should be hidden from the main app options dialog, requiring it to be manually set in the configuration text file.

Migrated from http://microfluidics.utoronto.ca/microdrop/ticket/143

{
    "status": "new", 
    "changetime": "2014-04-17T19:40:13", 
    "description": "Add setting in app options to enable advanced menu items, etc. for debugging and prototyping, while not cluttering the main user interface.\n\nFor now, the option should be hidden from the main app options dialog, requiring it to be manually set in the configuration text file.", 
    "reporter": "cfobel", 
    "cc": "", 
    "resolution": "", 
    "_ts": "1397763613851119", 
    "component": "microdrop", 
    "summary": "App option for `advanced mode`", 
    "priority": "major", 
    "keywords": "", 
    "version": "0.1", 
    "time": "2014-01-24T19:30:19", 
    "milestone": "Microdrop 1.1", 
    "owner": "", 
    "type": "enhancement"
}

[cfobel]

Trac update at 20140312T20:02:01: ryan changed milestone from "1.0" to "1.1"

[cfobel]

Trac update at 20140417T19:40:13: ryan changed component from "" to "microdrop"