Improvements and fixes (#595)

- Fix BluetoothSettings app not updating when toggling on Bluetooth on
- Fix BluetoothSettings app crash when closing while scanning
- Fix BluetoothSettings app crash when turning BT off while scanning
- WebServer doesn't save config anymore as a side-effect of reading the config
- Add missing license headers
- Use TactilityKernel's time and delay functions instead of TactilityFreeRtos ones

TactilityKernel/include/tactility/delay.h

@@ -10,6 +10,7 @@
 #endif
 
 #include <tactility/freertos/freertos.h>
+#include <tactility/freertos/task.h>
 #include <tactility/check.h>
 
 #ifdef __cplusplus

TactilityKernel/include/tactility/time.h

@@ -11,7 +11,8 @@
 #include <stdint.h>
 
 #include "defines.h"
-#include "tactility/freertos/task.h"
+#include <tactility/freertos/port.h>
+#include <tactility/freertos/task.h>
 
 #ifdef ESP_PLATFORM
 #include <esp_timer.h>
@@ -31,6 +32,8 @@ static_assert(configTICK_RATE_HZ == 1000);
 static_assert(configTICK_RATE_HZ == 1000, "configTICK_RATE_HZ must be 1000");
 #endif
 
+#define MAX_TICKS (~(TickType_t)0)
+
 static inline uint32_t get_tick_frequency() {
     return configTICK_RATE_HZ;
 }