[LyX/master] Disable editing of math package names in Document Settings

[Juergen Spitzmueller]

commit e1dd91e10e3f76b4bd47c8d7133ad7318edf04f1
Author: Yuriy Skalko <yuriy.skalko at gmail.com>
Date:   Tue Aug 11 11:48:24 2020 +0300

    Disable editing of math package names in Document Settings
---
 src/frontends/qt/ui/MathsUi.ui |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/src/frontends/qt/ui/MathsUi.ui b/src/frontends/qt/ui/MathsUi.ui
index 4258819..e30f970 100644
--- a/src/frontends/qt/ui/MathsUi.ui
+++ b/src/frontends/qt/ui/MathsUi.ui
@@ -22,6 +22,9 @@
        <verstretch>0</verstretch>
       </sizepolicy>
      </property>
+     <property name="editTriggers">
+      <set>QAbstractItemView::NoEditTriggers</set>
+     </property>
      <property name="alternatingRowColors">
       <bool>true</bool>
      </property>