Page border bug: margin edits are enable when no broder

To reproduce
1. Format -> Page
2. Set left and ritght borders only (All margins is editable)
4. Set inner margins bigger (using syncronize check box), for example 2 cm
5. Click OK

Result
Margin appaer just on the right and the left side, so just on those
sides where there is a border.

Expected:
Only the relevant edits must be enable on border tab page
just as in case of paragraph borders.

Note to fix:
Inner margin without border is used only for table, but not
for other objects (paragraph, page, frame)

Change-Id: Ie611eb29432cb7e75131154d94b4a8db1c3f1bb8

cui/source/tabpages/border.cxx

@@ -1075,8 +1075,8 @@ IMPL_LINK_NOARG(SvxBorderTabPage, LinesChanged_Impl)
         // for tables everything is allowed
         sal_uInt16 nValid = VALID_TOP|VALID_BOTTOM|VALID_LEFT|VALID_RIGHT;
 
-        // for border and paragraph the edit is disabled, if there's no border set
-        if(nSWMode & (SW_BORDER_MODE_FRAME|SW_BORDER_MODE_PARA))
+        // for other objects (paragraph, page, frame) the edit is disabled, if there's no border set
+        if(!(nSWMode & SW_BORDER_MODE_TABLE))
         {
             if(bLineSet)
             {