Add the ability to enable plugins in the installer
Add the ability to select plugins in the installer
Update changelog
Merge pull request #248 from flanpy/master

#1489096 : Ability to select plugins to enable in the installer
Fix rcube_utils::get_boolean() test to not use deprecated function alias
Fix js error when calling show_popup_dialog() without 'options' argument
Upgrade jQuery to version 2.1.3