Create "New Army" dialog in Qt# app

[ibboard]

The Qt# version of WarFoundry needs a "Create Army" dialog, similar to the WinForms one.

Confirm all Qt# sub-tickets

(In r466) Re #242: Qt# UI

• Make use of icons

Re #243: Create "New Army" dialog in Qt# app

• Create initial rendering of dialog (non-functional)

Re #247: Implement menu options in Qt# app

• Add initial hook for New Army dialog from menu item

(In r467) Re #243: Create "New Army" dialog in Qt# app

• Remove unnecessary delegate creation and use built-in auto-delegate wrapping
• Remove unnecessary marking as "signal" method - not needed when using delegates

(In r469) Re #242: Create Qt# UI for WarFoundry

• Fix warnings about Connect strings not being signals

Re #243: Create new Qt# "Create Army" dialog

• Change from List View to List Widget (views need models, which only handle QVariants and not arbitrary objects)
• Populate Game System list
• Populate races list on game system selection changed
• Set text on some labels

(In r474) Re #243: Create "New Army" dialog in Qt# app

• Disable "OK" button on army creation form
• Add event hooks and methods to enable OK Button when all values are completed
• Set properties on spinbox

Still need to work out how to stop dialog showing up in task bar.

(In r478) Fixes #243: Create "New Army" dialog in Qt# app

• Make dialog not show in task bar (add parent to constructor)
• Add methods to retrieve values

Re #242: Create Qt# UI for WarFoundry

• Copy lots of implementation from the WinForms app to get some core army loading working

(looks like we need to investigate refactoring commonality)