call event filter when adding tag from within content
add event filters when creating a synonym
rename makesynonym event filter
synonyms edition and deletion use standard event filters
Some fixes to pull request #48
Implemented #019126: Insert metadata based on keywords
Merge pull request #56 from patrickallaert/issue-19126

Implemented #019126: Insert metadata based on keywords
Add "LS" to extension name

LS stands for "Legacy Stack", and is added to all 4.x extensions
to make it clear what is running on Legacy vs Symfony stack in 5.0
Changed: welcome 2013
Remove jQuery deprecated features in javascript code
Add usage examples, closes #60
Added composer.json
Add instructions for admin2 design in install docs
Merge pull request #62 from ezsystems/doc-fix-admin2

Add instructions for admin2 design in install docs