Remove unused functions related with request processing
Remove unused "libs/common/forms.php" library
Use a function to load system configs
Remove unused "read_config_file" function
Make basic locale function work without database
Do not initialize database and load plugins during installation
Inject a Router to the Application via constructor
Fix bug with localized strings case sensitivity
Specify routes set to load via Router options
Use "RouterInterface" instead of "Router" in "RouterAwareInterface"