[Fix]: Warning whilst linking PIE
[Mod]: Compress PNG files on Release and apply to copied files
[Mod]: Changed default settings from linphone to caspian
[Mod]: Reload linphone core after signing out
[Mod]: Reload caspian config after signing out
[Fix]: Merging chats - added phone number as prefix to chat database file name
[Mod]: antlr updated
Merge branch 'caspian' of https://github.com/pomozoff/caspianphone into caspian
[Fix]: Mixing chats from all accounts