Use transaction to avoid double SportSession creation on garmin import, refs #33.
When no garmin atcivity has been updated in first pass, skip whole user update.
Fix garmin_import users listing.
Max garmin activities in a pass = 20.
Speed & security improvements for garmin import, refs #33.
Minor css fix: connect button color not matching graphic chart.
Minor fix: typo in word.
Minor enhancement: linking 'No Vma, go to your profile to set one' to the div just prior to vma div in the profile, so that the use see it directly.
Minor enhancement: adding tooltip information about abbreviations in VMA page, based on glossary.
Minor fix: adding signification of EMA in the glossary.
Wrong file committed in commit 5a043ff, undo wrong modification and push right one.
Adding icons in the glossary, fix #48.
Minor fixes: correcting grammar mistakes in the mail invitations and modifying the club creation text.
Separate icons from text in glossary.
Minor text edition on ask club invite.