Defaults: Remove minScrollBack there should not be a min height

Fixes gh-6302
Closes gh-8182

Author: arschmitz

js/defaults.js

@@ -49,10 +49,6 @@ return $.extend( $.mobile, {
 	// Set maximum window width for transitions to apply - 'false' for no limit
 	maxTransitionWidth: false,
 
-	// Minimum scroll distance that will be remembered when returning to a page
-	// Deprecated remove in 1.5
-	minScrollBack: 0,
-
 	// Set default dialog transition - 'none' for no transitions
 	defaultDialogTransition: "pop",
 

js/widgets/pagecontainer.js

@@ -120,16 +120,15 @@ $.widget( "mobile.pagecontainer", {
 		}
 
 		var active = this._getActiveHistory(),
-			currentScroll, minScroll, defaultScroll;
+			currentScroll, defaultScroll;
 
 		if ( active ) {
 			currentScroll = this._getScroll();
-			minScroll = this._getMinScroll();
 			defaultScroll = this._getDefaultScroll();
 
 			// Set active page's lastScroll prop. If the location we're
 			// scrolling to is less than minScrollBack, let it go.
-			active.lastScroll = currentScroll < minScroll ? defaultScroll : currentScroll;
+			active.lastScroll = currentScroll < defaultScroll ? defaultScroll : currentScroll;
 		}
 	},
 
@@ -141,10 +140,6 @@ $.widget( "mobile.pagecontainer", {
 		return this.window.scrollTop();
 	},
 
-	_getMinScroll: function() {
-		return $.mobile.minScrollBack;
-	},
-
 	_getDefaultScroll: function() {
 		return $.mobile.defaultHomeScroll;
 	},

tests/unit/content/content_core.js

@@ -246,14 +246,9 @@ test( "prefers default scroll when current scroll < default scroll", function()
 		return active;
 	};
 
-	// min scroll
-	proto._getMinScroll = function() {
-		return 50;
-	};
-
 	// current scroll
 	proto._getScroll = function() {
-		return 25;
+		return 0;
 	};
 
 	// default scroll