Mainly bug fixes for 5.4/5.5

• updates in the texts (from hie format to the new JSesh format)
• important bug fix for PDF cut and paste (not pdf export) : the proportions are now the same as the original proportions
• PDF are supposed to be smaller (still to check)
• fix for transliteration font (in some conditions, the Windows version of JSesh kept forgetting that it was using JSesh old font)
• portuguese and spanish translation (please test and send feedback)
• bug fix in SVG reading. JSesh can now handle SVG signs with "arcs" in them.
• better shapes for numbers 2 and 3.
• Quick pdf export : folder selection now ok
• Shading is now placed under the drawings, solving problems in PDF export (we don't use transparency, to avoid problems when printing).