update bootstrap composer dependence
change css and javascripts imports
class replacements

.row-fluid -> .row
.span* -> .col-md-*
.offset* -> .col-md-offset-*
.brand -> .navbar-brand
.nav-collapse -> .navbar-collapse
.nav-toggle -> .navbar-toggle
.btn-navbar -> .navbar-btn
.btn -> .btn .btn-default
.btn-mini -> .btn-xs
.btn-small -> .btn-sm
.alert-error -> .alert-danger
.control-group.warning .control-group.error .control-group.success	 ->
.form-group.has-*
.input-prepend .input-append	 -> .input-group
.add-on -> .input-group-addon
.muted -> .text-muted
.text-error -> .text-danger
menu migration

- remove .navbar-inner
- refactor the global menu structure
- change navbar menu header class to .dropdown-header
refactored pagination
renamed class "sort-span" to "sort-addon" to avoid bootstrap selector matching on span
removed unused bootstrap-responsive.min.css (bootstrap 2.3 CSS file)
changed close icon char
added role "toolbar" on toolbars
refactored bootstrap 2.3 icons classes to bootstrap 3.1.1
removed extra "glyphicon" class on objects/batch actions
added option class to set pagination's buttons size
refactored pagination on list template
glyphicon base class on actions
refactored toolbars

add custom style to match the initial vertical margin of 10px on
Bootstrap 2.3
refactored for "form-group" class

renamed deprecated "form-actions" and "control-group" classes to
"form-group" in Admingenerator custom styles
refactored list filters template
refactored lists template
refactored show pages template

/!\ only simple template without sidebar is actually refactored
refactored edit templates