[GEN][ZH] Fix and remove Scroll Speed limits

[xezon]

This change fixes and removes the lower and upper Scroll Speed boundaries.

When reading ScrollFactor from Options.ini

• Min Scroll Speed is now 1 instead of 0.
• Max Scroll Speed is now uncapped instead of 100. This means that the ScrollFactor above 100 is no longer lost on game restart. And the user can set any scroll speed he likes.

When using Scroll Speed slider in Options Menu

• The Scroll Speed slider no longer overwrites the ScrollFactor in the Options.ini if it is not set to a recognized range (10 - 145). The Slider Range is defined in OptionsMenu.wnd:SliderScrollSpeed (data).

TODO

• Replicate in Generals

[xezon]

Rebased on Main.

[Mauller]

Looks good to me and does what it says on the tin.

[xezon]

Replicated in Generals with conflicts

$ git diff 27f7063006edbafe20db29ae1d5e308c789a0a23..9a76f9eb7ac54d62f9d355adee35eecf5efe047e > changes.patch

$ git apply -p2 --directory=Generals --reject --whitespace=fix changes.patch
Checking patch Generals/Code/GameEngine/Source/GameClient/GUI/GUICallbacks/Menus/OptionsMenu.cpp...
Hunk #1 succeeded at 336 (offset -32 lines).
Hunk #2 succeeded at 820 (offset -46 lines).
Hunk #3 succeeded at 1130 (offset -60 lines).
error: while searching for:
        GadgetCheckBoxSetChecked( checkDoubleClickAttackMove, TheGlobalData->m_doubleClickAttackMove );

        // set scroll speed slider
        Int scrollPos = (Int)(TheGlobalData->m_keyboardScrollFactor*100.0f);
        GadgetSliderSetPosition( sliderScrollSpeed, scrollPos );
        DEBUG_LOG(("Scroll SPeed %d", scrollPos));

        // set the send delay check box
        GadgetCheckBoxSetChecked(checkSendDelay, TheGlobalData->m_firewallSendDelay);

error: patch failed: Generals/Code/GameEngine/Source/GameClient/GUI/GUICallbacks/Menus/OptionsMenu.cpp:1838
Applying patch Generals/Code/GameEngine/Source/GameClient/GUI/GUICallbacks/Menus/OptionsMenu.cpp with 1 reject...
Hunk #1 applied cleanly.
Hunk #2 applied cleanly.
Hunk #3 applied cleanly.
Rejected hunk #4.