Splitting "Hotkey 'IfXXX'" into "HotIfXXX"

[HelgeffegleH]

New:

HotIf ["Expression"/FunctionObject]    ; replaces Hotkey "If", [...]
HotIfWinXXX [WinTitle, WinText]        ; replaces Hotkey "IfWinXXX", [...]

Reason, the settings also applies to hotstrings. Slight improvement of convenience, since no quotes are required. Simplifies the Hotkey function, wrt documentation/mnemonics. Also better matches changes per #175.

Edit: Perhaps off-topic, but I feel that HotIfNotWinActive and HotIfNotWinExist would be better names, for closer resemblance to,

#If not WinActive('...')
#If not WinExist('...')

or even better,

#HotIf not WinActive('...')
#HotIf not WinExist('...')