CSR Dashboard / Team Leader Dashboard / CSR Manager Dashboard Fix Notes

Changed files:
- csr_manager/dashboard.php
- csr/ajax/get_manager_dashboard.php
- csr_manager/report.php

What was fixed:
1. CSR Manager Dashboard now has two separate overview sections:
   - Overall Total: all teams, all agents, all team leaders, all available records up to today.
   - Today: all teams, all agents, all team leaders, today only.

2. CSR Manager overview totals are collected from actual team/member performance data.
   It includes team leaders through csr_teams.manager_id and agents through csr_team_members.csr_id.

3. CSR Manager team containers still show each team's own totals only.

4. CSR Manager Daily Report is now separated by team.
   Each team section shows individual data and a TEAM TOTAL row.
   The bottom of the report now has a GRAND TOTAL row for all teams.

5. No new database import is required for this patch. It uses the existing tables and data sources already used by the dashboard/report.

Important:
- Make sure CSR team leaders are correctly saved in csr_teams.manager_id.
- Make sure CSR agents are correctly assigned in csr_team_members.
- If a user has no team assignment, they may show under No Team in the report.
