use gluesql as in memory db

[24seconds]

• Data manipulation PoC #48
• apply gluesql in filtering activity row logic
• apply gluesql in signaling server related logics
• apply gluesql in p2p related logics #77
• revisit: apply gluesql in Home tab layout
• revisit: apply gluesql in MyProfile tab layout #57
• revisit: apply gluesql in Notification tab layout
• transform snake_case field name to camelCase field name in localAPI side
• use one table for files and links table #63
• add logics to peer list layout #64