New photo viewer(close by swipe down, not tested on 2.x), optimize emoji load, fixed audio notes and typing in secret chats

https://github.com/DrKLO/Telegram/pull/443
Fixed image stuck after zoom end between max and min
Photo viewer bug fixes
Merge branch 'dev' of https://github.com/DrKLO/Telegram

Conflicts:
	TMessagesProj/src/main/java/org/telegram/messenger/Emoji.java
	gradle/wrapper/gradle-wrapper.properties