For Kicks and Bans: If you do not use PunkBuster you can not define a custom time at every usage of the tempban-command.
The time given in server.cfg will be used. This can not be higher than 3600 otherwise it will be set to 5 by default.
Which changes you have to made for the new feature i can't tell you. You might check the differences in the two files or try to upgrade completley.
A vote for next gameetype is not available at the moment. The feature to vote for the next map is absolutley new, might manu will integrate this.