[ui] modernize the language button

* The language button is now a toolbar button with a dropdown arrow.
* Its icon is a globe for Windows XP to Windows 7 and a globe with characters
  on it for Windows 8 and above (same as the icon for the 'Languages' control
  panel).
* Closes #488

res/localization/rufus.loc

@@ -902,7 +902,6 @@ b "en-US"
 # Main dialog
 g IDD_DIALOG
 s IDD_DIALOG +15,0
-m IDC_LANG +15,0
 s IDS_FORMAT_OPTIONS_GRP +15,0
 s IDC_DEVICE +15,0
 s IDC_PARTITION_TYPE +15,0
@@ -3414,7 +3413,6 @@ b "en-US"
 # Main dialog
 g IDD_DIALOG
 s IDD_DIALOG 20,0
-m IDC_LANG 20,0
 t IDS_DEVICE_TXT "Apparaat"
 s IDC_DEVICE 20,0
 t IDS_PARTITION_TYPE_TXT "Partitie-indeling en type computer"
@@ -4692,7 +4690,6 @@ m IDC_BOOTTYPE +30,0
 m IDC_SELECT_ISO +30,0
 s IDC_INFO +30,0
 m IDC_DISK_ID +30,0
-m IDC_LANG +28,0
 m IDC_START +28,0
 m IDCANCEL +28,0
 
@@ -5105,7 +5102,6 @@ g IDD_DIALOG
 s IDD_DIALOG +156,0
 t IDS_DEVICE_TXT "Συσκευή"
 s IDC_DEVICE +156,0
-m IDC_LANG +156,0
 t IDS_PARTITION_TYPE_TXT "Σύστημα διαμερισμού και τύπος συστήματος"
 s IDC_PARTITION_TYPE +156,0
 t IDS_FILESYSTEM_TXT "Σύστημα αρχείων"
@@ -6002,7 +5998,6 @@ m IDC_BOOTTYPE +66,0
 s IDC_BOOTTYPE -4,0
 m IDC_DISK_ID +66,0
 s IDC_DISK_ID -4,0
-m IDC_LANG +62,0
 m IDC_LOG +10,0
 m IDC_NBPASSES +66,0
 s IDC_NBPASSES -4,0
@@ -6779,7 +6774,6 @@ b "en-US"
 g IDD_DIALOG
 
 s IDD_DIALOG +60,0
-m IDC_LANG +60,0
 s IDC_PROGRESS +60,0
 s IDC_DEVICE +60,0
 s IDC_PARTITION_TYPE +60,0
@@ -7660,7 +7654,6 @@ v 1.0.17
 # Main dialog
 g IDD_DIALOG
 s IDD_DIALOG 20,0
-m IDC_LANG 20,0
 s IDC_DEVICE 20,0
 s IDC_PARTITION_TYPE 20,0
 s IDC_FILESYSTEM 20,0
@@ -8540,7 +8533,6 @@ b "en-US"
 # Main dialog
 g IDD_DIALOG
 s IDD_DIALOG +30,0
-m IDC_LANG +30,0
 s IDC_PROGRESS +30,0
 s IDC_DEVICE +30,0
 s IDC_PARTITION_TYPE +30,0
@@ -8971,7 +8963,6 @@ t IDC_ENABLE_FIXED_DISKS "Før opp USB Hard Disker"
 t IDC_EXTRA_PARTITION "Legger til fiks for gamle BIOSer (ekstra partisjon, etc.)"
 t IDC_RUFUS_MBR "Bruk Rufus MBR med BIOS ID"
 s IDC_RUFUS_MBR 10,0
-m IDC_LANG 10,0
 s IDC_DEVICE 10,0
 s IDC_PARTITION_TYPE 10,0
 s IDC_FILESYSTEM 10,0
@@ -9404,7 +9395,6 @@ b "en-US"
 # Main dialog
 g IDD_DIALOG
 s IDD_DIALOG +40,0
-m IDC_LANG +40,0
 s IDS_FORMAT_OPTIONS_GRP +40,0
 s IDC_PROGRESS +40,0
 s IDC_DEVICE +40,0
@@ -12100,7 +12090,6 @@ b "en-US"
 g IDD_DIALOG
 s IDD_DIALOG +5,0
 s IDC_DEVICE +5,0
-m IDC_LANG +5,0
 s IDC_PARTITION_TYPE +5,0
 s IDC_FILESYSTEM +5,0
 s IDC_CLUSTERSIZE +5,0
@@ -12568,7 +12557,6 @@ t IDC_ENABLE_FIXED_DISKS "Lista USB-hårddiskar"
 t IDC_EXTRA_PARTITION "Lägg till korrigeringar för äldre BIOS:ar"
 t IDC_RUFUS_MBR "Använd Rufus MBR med BIOS-ID"
 s IDC_RUFUS_MBR 20,0
-m IDC_LANG 50,0
 s IDC_DEVICE 50,0
 s IDC_PARTITION_TYPE 50,0
 s IDC_FILESYSTEM 50,0
@@ -12993,7 +12981,6 @@ b "en-US"
 # Main dialog
 g IDD_DIALOG
 s IDD_DIALOG +5,0
-m IDC_LANG +5,0
 t IDS_DEVICE_TXT "Aygıt"
 s IDC_DEVICE +5,0
 t IDS_PARTITION_TYPE_TXT "Disk Bölüm Düzeni ve Hedef Sistem Türü"
@@ -13452,7 +13439,6 @@ b "en-US"
 # Main dialog
 g IDD_DIALOG
 s IDD_DIALOG +20,0
-m IDC_LANG +20,0
 s IDS_FORMAT_OPTIONS_GRP +20,0
 s IDS_ADVANCED_OPTIONS_GRP +20,0
 s IDC_ABOUT +26,0