Fix #683. Show PPPs tab as selected when tab is selected.
Fix empty data shown in interfaces_ppps when dislaying modem interfaces.
Also, clean up interfaces_ppps_configure. For PPtP/L2tP if Local IP field isleft empty, try to get the IP from the physical interface if it has one. If notjust log error and abort.
Show friendly interface name on the gui for members when they are assigned interfaces.
Make pppoe reset work again with new <if> naming scheme.
Previous commit also moved pppoe reset functions to interfaces.incso we don't have to duplicate in interfaces.php and interfaces_ppps_edit.php
Also, add code so that when ppp config section gets deleted, associated <cron>...
Change ptpid to use sequential number. This makes Ermal happy. :)
Also add <if> section to <ppps><ppp> which is ppp type + ptpid.`
Use "PPPs" as the new Tab name in Interfaces -> Assign. Rename files and update affected files.
Also, add upgrade_config function 062_to_063.