Emoji symbol corrections

These changes will fix following issues with emoji symbols 
1) incorrect symbol is shown compared to one shown in iOS and Android Whatsapp
2) Symbol originally written in iOS or Android and transferred to Sailfish using other transport than Whatsapp is copy-pasted to Mitäkuuluu and not shown correctly or an unknown character placeholder is shown
3) Symbol written with any keyboard or other text source using Unified codes (including The Emoji Keyboard) does not show correctly in Mitäkuuluu

Detailed changes:
* Unified 1F605 mapping to Softbank E331 is incorrect. Correct code is 1F605 already supported in source code (fix issues 1, 2 and 3)           
* Unified 1F43E mapping to Softbank E536 is incorrect. Correct code is 1F43E already supported in source code (fix issues 1, 2 and 3)
* Unified 1F463 mapping to Softbank is missing. Correct mapping is E536 (fix issues 2 and 3)
* Unified 1F4D3 mapping to Softbank E148 is incorrect. Correct code is 1F4D3 already supported in source code (fix issues 1, 2 and 3)
* Unified 1F4D6 mapping to Softbank is missing. Correct mapping is E148 (fix issues 2 and 3)
* Unified 1F45E mapping to Softbank E007 is incorrect. Correct code is 1F45E already supported in source code (fix issues 1, 2 and 3)
* Unified 1F45F mapping to Softbank is missing. Correct mapping is E007. (fix issues 2 and 3)
* Unified 1F4A6 mapping to Softbank is missing. Correct mapping is E331. (fix issues 2 and 3)