Feature #601: Adds custom variables section to the wizards.
Feature #601: Adds custom variables section to the wizards.

This sections allows user to define their custom variables in the templates.

hsanjuan/one,baby-gnu/one,goberle/one,hsanjuan/one,baby-gnu/one,unistra/one,hsanjuan/one,OpenNebula/one,abelCoronado93/one,fasrc/one,fasrc/one,dberzano/opennebula-torino,dberzano/opennebula-torino,baby-gnu/one,dberzano/opennebula-torino,abelCoronado93/one,OpenNebula/one,goberle/one,mattthias/one,abelCoronado93/one,ohamada/one,mattthias/one,tuxmea/one,Terradue/one,unistra/one,OpenNebula/one,ohamada/one,hsanjuan/one,goberle/one,juanmont/one,mattthias/one,goberle/one,alvarosimon/one,ggalancs/one,abelCoronado93/one,cloudweavers/one,spirit03/one,tuxmea/one,dberzano/opennebula-torino,goberle/one,goberle/one,mattthias/one,OpenNebula/one,tuxmea/one,mattthias/one,cloudweavers/one,ohamada/one,hsanjuan/one,baby-gnu/one,alvarosimon/one,goberle/one,alvarosimon/one,goberle/one,atodorov-storpool/one,baby-gnu/one,atodorov-storpool/one,baby-gnu/one,mattthias/one,juanmont/one,Terradue/one,atodorov-storpool/one,hsanjuan/one,ohamada/one,abelCoronado93/one,fasrc/one,tuxmea/one,alvarosimon/one,mattthias/one,fasrc/one,ggalancs/one,unistra/one,alvarosimon/one,juanmont/one,alvarosimon/one,juanmont/one,ohamada/one,unistra/one,unistra/one,tuxmea/one,ggalancs/one,atodorov-storpool/one,spirit03/one,cloudweavers/one,ohamada/one,ohamada/one,hsanjuan/one,ggalancs/one,OpenNebula/one,OpenNebula/one,mattthias/one,OpenNebula/one,OpenNebula/one,juanmont/one,tuxmea/one,Terradue/one,fasrc/one,abelCoronado93/one,cloudweavers/one,cloudweavers/one,cloudweavers/one,spirit03/one,hsanjuan/one,fasrc/one,Terradue/one,spirit03/one,alvarosimon/one,Terradue/one,Terradue/one,spirit03/one,atodorov-storpool/one,abelCoronado93/one,atodorov-storpool/one,alvarosimon/one,juanmont/one,tuxmea/one,juanmont/one,OpenNebula/one,fasrc/one,atodorov-storpool/one,juanmont/one,spirit03/one,cloudweavers/one,ggalancs/one,dberzano/opennebula-torino,dberzano/opennebula-torino,baby-gnu/one,Terradue/one,unistra/one,atodorov-storpool/one,cloudweavers/one,ggalancs/one,ggalancs/one,atodorov-storpool/one,tuxmea/one,unistra/one,spirit03/one,ohamada/one,abelCoronado93/one,fasrc/one,juanmont/one,Terradue/one,ggalancs/one,unistra/one,baby-gnu/one,dberzano/opennebula-torino,spirit03/one