[TASK] Clean-up and update INSTALL.txt

- Update copyright year
- Includes required module "fileinto" in recommended section
- Adds reference to recommended library FreeType 2
- Corrects typo3.org deep links accordingly (T3O)

Change-Id: I067b2d930c1a6ffa15ea61f10723e29eb434f491
Resolves: #48541
Releases: 6.2
[TASK][INSTALL] Test for FreeType2 DPI setting (=96)

Change-Id: I9438206b23036ec2408218aef3f1bf684ac88929