- added copy button to modifier stack UI

- add warning about applying decimation
 - some more UI tweaks (rounding of modifier pane, make toggles only in header,
   add object name to try to convey that modifier stack is tied to OB)
 - bug fix, modifier recalc wasn't done on make link
 - bug fix, uiBlockEndAlign didn't clear align flags with certain themes,
   pretty sure this wasn't intended. (TON: PLEASE CHECK)

source/blender/src/interface.c

@@ -4337,7 +4337,10 @@ void uiBlockEndAlign(uiBlock *block)
 	uiBut *prev, *but=NULL, *next;
 	int flag= 0, cols=0, rows=0;
 	
-	if ( !((BIF_GetThemeValue(TH_BUT_DRAWTYPE) == 1) || (BIF_GetThemeValue(TH_BUT_DRAWTYPE) == 2))) return;
+	if ( !((BIF_GetThemeValue(TH_BUT_DRAWTYPE) == 1) || (BIF_GetThemeValue(TH_BUT_DRAWTYPE) == 2))) {
+		block->flag &= ~UI_BUT_ALIGN;	// all 4 flags
+		return;
+	}
 	
 	/* auto align:
 		- go back to first button of align start (ALIGN_DOWN)