- Replaced text mode EditConfigActivity with graphical Config activity

- Current configuration items are Auto Start, DNS Servers, Opus Bit Rate,
  and ICE Lite
- Added ICE and Stun Server account options
- Fixed bug in deleting of an account
- Updated libbaresip.a and baresip.h to baresip new_account_functions
  branch (not yet committed to master)

app/src/main/kotlin/com/tutpro/baresip/UserAgent.kt

@@ -36,7 +36,7 @@ class UserAgent (val uap: String) {
         fun remove(ua: UserAgent) {
             val index = BaresipService.uas.indexOf(ua)
             if (index != -1) {
-                BaresipService.uas[index].destroy()
+                BaresipService.uas.removeAt(index)
                 BaresipService.status.removeAt(index)
             }
         }