gettext bugfixes and smallfixes.

https://github.com/VlasovVitaly/Cataclysm-DDA/commit/6fd9b8392814dfcf305d92a278bd7136038e4ff1 Fixes very hidden bug:
![before](https://cloud.githubusercontent.com/assets/5244047/2953844/3e599d68-da66-11e3-8dfd-cd2b3152142b.png)
This happend only in non-English languages. This string printed when programm require empty string from gettext. Commit fix that. 

https://github.com/VlasovVitaly/Cataclysm-DDA/commit/21d6b3dfb0a60a4555183c4ecbfb129912ad8572 Fixes small translations errors.

https://github.com/VlasovVitaly/Cataclysm-DDA/commit/6b1dfb4c57689443c568760d7bcf769e2959241f Show translated names in crafting menu.