add nether armor and nether shield (#65)

* add texture files for nether based 3d_armor
* add texture files for nether based shield
* perpare for nether armor
* add nether armor
* add translation for nether armor
* add translation for nether armor
* add nether shield
* add nether shield translation
* add nether armor texture preview info
* add nether shield texture preview info
* add nether to settingtypes.txt
* add german translation for armor
* add german translation for shields
* Nether armor stats modified.
* Modify Nether Shield Stats

* Update inline documentation

shields/locale/shields.de.tr

@@ -0,0 +1,17 @@
+# textdomain: shields
+
+
+### init.lua ###
+
+Admin Shield=Adminschild
+Bronze Shield=Bronzeschild
+Cactus Shield=Kaktusschild
+Crystal Shield=Kristallschild
+Nether Shield=Netherschild
+Diamond Shield=Diamantschild
+Enhanced Cactus Shield=verbessert Kaktusschild
+Enhanced Wood Shield=verbessert Holzschild
+Gold Shield=Goldschild
+Mithril Shield=Mithrilschild
+Steel Shield=Stahlschild
+Wooden Shield=Holzschild

shields/locale/shields.fr.tr

@@ -7,6 +7,7 @@ Admin Shield=Bouclier d'admin
 Bronze Shield=Bouclier en bronze
 Cactus Shield=Bouclier en cactus
 Crystal Shield=Bouclier en cristal
+Nether Shield=Bouclier en nether
 Diamond Shield=Bouclier en diamant
 Enhanced Cactus Shield=Bouclier en cactus amélioré
 Enhanced Wood Shield=Bouclier en bois amélioré

shields/locale/template.txt

@@ -7,6 +7,7 @@ Admin Shield=
 Bronze Shield=
 Cactus Shield=
 Crystal Shield=
+Nether Shield=
 Diamond Shield=
 Enhanced Cactus Shield=
 Enhanced Wood Shield=