UI Improvement

[+] sidebar icon changes to icon 8
[+] Agent Basic Details Select2 error msg border icon not 
    working and error msg not disapper when the user select 
    the option


agents
agent_bank
agent_branch
agent_subscriptions
banks
bank_documents	
branches	
branch_documents
branch_operator
customers
document_types	
agent_documents
bank_types

permissions	
permission_role	
roles