Expense without group. 
Groups are created using UUID. 
FriendShip is getting created.
Need to set friendship id by doing sort, concat, encrypt, UUID of users
ids to uniquely identify the friendship.
Need to use IOU of the group to update the IOU and then persist those
groups in insertExpense.
remove unused files.
Expense without group is working good.
Remaining
Dummy id for user for mapping payer and participant info.
Back end changes completed. dummy-id is used for mapping.
view cleanup.
Merge branch 'master' into expense-without-group
UI for expense without group.
Autosuggest is done.
Selected friends reInitialize
autosuggest css.
Added group type.
Integrated expense without group changes.
filtering dummy groups.
Adding imgUrl
Fixes.
imgUrl
dummy userId fix.
social class to autosuggest elements.
autosuggest.