[MDL-35356] Replace Excel_Writer with PHPExcel and improve ODS export - Moodle Tracker

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Affected Branches:
MOODLE_23_STABLE
Fixed Branches:
MOODLE_25_STABLE
Pull from Repository:
git://github.com/skodak/moodle.git
Pull Master Branch:
w51_~~MDL-35356~~_m25_excel
Pull Master Diff URL:
https://github.com/skodak/moodle/compare/master...w51_MDL-35356_m25_excel
Testing Instructions:

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1/ use http://127.0.0.1/lib/tests/other/spreadsheettestpage.php to generate the test files
2/ open the files in various office suites (alternatively use the attached samples)
3/ test existing excel/ods export in moodle
4/ test it using different browsers (IE, FF, Safari, ignore Chrome, lol, not really).

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1/ use http://127.0.0.1/lib/tests/other/spreadsheettestpage.php to generate the test files 2/ open the files in various office suites (alternatively use the attached samples) 3/ test existing excel/ods export in moodle 4/ test it using different browsers (IE, FF, Safari, ignore Chrome, lol, not really).

The Excel_Writer library has been failing to produce reliable output for some time. We have been considering dropping Excel support altogether.

However it may be worth considering a new alternative called PHPExcel.

has been marked as being related by

MDL-28070 Review Excel writer package

is duplicated by

MDL-37204 Look for a replacement for pear/excel library...

MDL-32259 reimplement CSV and Excel import/export support

will help resolve

MDL-40484 Implement Excel import for the gradebook

Participants:: David Monllaó, Eloy Lafuente (stronk7), Michael de Raadt, Petr Skoda, Rajesh Taneja

Component watchers:: Amaia Anabitarte, Carlos Escobedo, Ferran Recio, Ilya Tregubov, Laurent David, Raquel Ortega, Sara Arjona (@sarjona)