Latexila own new icon, no symlink.

I've made an icon for LaTeXila. There was a symlink to generic TeX editor. 

![icons](https://cloud.githubusercontent.com/assets/8478202/4985700/37693398-6930-11e4-9cd7-c083cb1f57bd.png)

There is an open issue about this: https://github.com/numixproject/numix-icon-theme-circle/issues/1230