store id of feature and mapped features in the index instead of xref
allow to upload features
added import feature function
download example-data.csv
remove unused field
download feature with description
fixed the download mappings
add error handling message
download mappings correctly
solved the problem where multiple users are using the same account
resolved multiple user using BCC at the same time
solved the multi-user problem
separated progress bars
cleaned up
changed the message shown when multiple users are using biobankconnect with same user account
mutiple people using same user account is not allowed
mutiple people using same user account is not allowed
added session time-out;added example ontology file
session time-out after 10 mins
add exception handler for stemmer