bugfix: clear selection in a couple more places

Dependencies

• [2] X75QPYVW move Selection1 clearing past business logic
• [*] BULPIBEG beginnings of a module for the text editor
• [*] CG3264MM move
• [*] DHI6IJCN selecting text and deleting selections

Change contents

• edit in text.lua at line 299
  [5.1123]

  [2.86]
  + Selection1 = {}
• edit in text.lua at line 302
  [5.1209]

  [6.9517]
  + Selection1 = {}