Version 1.8.0

Added:

• Custom font size to text picto editor
• E-tran frames Templates, see an explanation on:
  https://www.mndassociation.org/wp-content/uploads/2015/02/54e-trans-frame-info.pdf

Changed:

• Show all zoom options in the pictopage editor zoom list

Fixed:

• Transparent user/network PNG files were handled incorrectly
• Reading of PNG files on Japanese computer was failing
• Loading custom pictos in the pictocreator removed background image