WIP: row-major everywhere; restore masks in GUI (#724,761,762)

This resolves #724 (closed) (masks ignored in GUI). This resolves #761 (closed) (confusion of row-major and column-major). This resolves #762 (closed) (line breaks in ba.int files).

Base/Axis/Frame.cpp

@@ -94,17 +94,16 @@ std::vector<int> Frame::allIndices(size_t i_flat) const
     return result;
 }
 
-size_t Frame::projectedIndex(size_t i_flat, size_t k_axis) const
+size_t Frame::projectedIndex(size_t i, size_t k_axis) const
 {
     ASSERT(k_axis < rank());
     if (rank() == 1)
-        return i_flat;
+        return i;
     if (rank() == 2) {
         if (k_axis == 0)
-            return (i_flat / m_axes[1]->size()) % m_axes[0]->size();
+            return i % m_axes[0]->size();
         if (k_axis == 1)
-            return i_flat % m_axes[1]->size();
-        ASSERT_NEVER;
+            return (i / m_axes[0]->size()) % m_axes[1]->size();
     }
     ASSERT_NEVER;
 }