Update LCG version and docs

• use LCG 91
• minor updates to Doxygen docs

This, of course, will fail until LCG 91 is deployed on CVMFS.

• [2017-09-21 08:02] Validation started with lhcb-gaudi-merge#209
• [2017-09-22 00:02] Validation started with lhcb-future#542
• [2017-09-22 00:03] Validation started with lhcb-future-clang#320
• [2017-09-23 00:03] Validation started with lhcb-future-clang#321
• [2017-09-23 00:04] Validation started with lhcb-future#543
• [2017-09-24 00:03] Validation started with lhcb-future-clang#322
• [2017-09-24 00:04] Validation started with lhcb-future#544
• [2017-09-25 00:02] Validation started with lhcb-future#545
• [2017-09-25 00:02] Validation started with lhcb-future-clang#323

added 2 commits

• 2215c26f - Renamed release.notes.html for the major version bump
• 360640ab - Added v29r0 release notes in the gaudi-web format

Compare with previous version

added 21 commits

• 360640ab...08a17122 - 16 commits from branch gaudi:master
• 0a9f1232 - Updated version of LCG to 91
• 32278381 - Updated the list of supported platforms in Doxygen
• c7ba7bf4 - small update to CMake README.md
• 61301e06 - Renamed release.notes.html for the major version bump
• c072e1ab - Added v29r0 release notes in the gaudi-web format

Compare with previous version

added 1 commit

• ac288158 - Added v29r0 release notes in the gaudi-web format

Compare with previous version

approved this merge request

merged

mentioned in commit f16573bb