Feature
* feat: Integrate Google Tag manager (1199)
* add google tag manager
Signed-off-by: Niket <niket.shah1ocado.com>
* hide home learning emssage by default
Signed-off-by: Niket <niket.shah1ocado.com>
* include tag manager in base_old as well
Signed-off-by: Niket <niket.shah1ocado.com>
* dev -> staging
Signed-off-by: Niket <niket.shah1ocado.com>
* update Chromedriver version
Signed-off-by: Niket <niket.shah1ocado.com>
* update test
Signed-off-by: Niket <niket.shah1ocado.com> ([`d3c564c`](https://github.com/ocadotechnology/codeforlife-portal/commit/d3c564c7e00934c58f831692a91fd2f5ddc8d2ff))