Description of problem:

In Build > Manage Build Tools,there is the possibility to modify building settings, by changing default ones or creating new ones.

It works but all settings are lost after closing and then reopening the application. 

Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:

1. Create new or modify existing build settings
2. It works as expected, a new entry appears in the build menu along with a new icon in the toolbar
3. Close Latexila
4. Launch Latexila again : everything is gone : no menu entry, no icon and no setting in the tool

Expected results:

Of course, Latexila should save settings.
It makes it pretty unusable, as for instance I need to compile all my documents with -shell-escape option.