Twitter typeahead added
Installer form described in JSON
Tabs logic added
Calling base.html and form.js instead of a specific script
Building form thanks to a json structure
Fields weren't in form-group class. <hr> added.
Local validation added on form.js
Triggering parent update even if there is no change
Local validation almost stable

- Some limitations and bugs on equals validator
- Remote validation, post-sending action and note display not yet
implemented
Added a mecanism to prevent from launching the installer from wrong URL
Added a default case in WLang for a variable not defined
Merge remote-tracking branch 'origin/0.4' into installer-reloaded
Commenting form.js code
Add a logger function
Merge remote-tracking branch 'origin/0.4' into installer-reloaded
Updating installer to use BS 3.0.3 instead of 3.0.0
Local validation and global logic checked
Remote validation, command-based select entries, messages
"*" added on required fields
Installer now works correctly

Known bugs:
* Database credentials validation glitches
* Passwords equality check is weird
* Table prefix not checked correctly