* added config.h for general configuration

* added option to compile WiFi SSID + PWD to firmware
* added option to configure WiFi access point name and password
* added feature to retry connect to station WiFi (configurable timeouts)
* updated index.html
* added option for factory reset
* added info about project on index.html
* moved "update" and "home" to footer
* fixed #23 HM1200 yield day unit
* fixed DNS name of ESP after setup (some commits before)

tools/esp8266/config.h

@@ -0,0 +1,42 @@
+#ifndef __CONFIG_H__
+#define __CONFIG_H__
+
+// fallback WiFi info
+#define FB_WIFI_SSID    "YOUR_WIFI_SSID"
+#define FB_WIFI_PWD     "YOUR_WIFI_PWD"
+
+
+// access point info
+#define WIFI_AP_SSID    "AHOY DTU"
+#define WIFI_AP_PWD     "esp_8266"
+
+
+//-------------------------------------
+// CONFIGURATION - COMPILE TIME
+//-------------------------------------
+// time in seconds how long the station info (ssid + pwd) will be tried
+#define WIFI_TRY_CONNECT_TIME   15
+
+// time during the ESP will act as access point on connection failure (to
+// station) in seconds
+#define WIFI_AP_ACTIVE_TIME     3*60
+
+// default device name
+#define DEF_DEVICE_NAME         "ESP-DTU"
+
+// number of packets hold in buffer
+#define PACKET_BUFFER_SIZE      30
+
+// number of configurable inverters
+#define MAX_NUM_INVERTERS       3
+
+// maximum human readable inverter name length
+#define MAX_NAME_LENGTH         16
+
+// maximum buffer length of packet received / sent to RF24 module
+#define MAX_RF_PAYLOAD_SIZE     64
+
+// changes the style of "/setup" page, visualized = nicer
+#define LIVEDATA_VISUALIZED
+
+#endif /*__CONFIG_H__*/