change bangla character replace algorithm
Remove unused method
add about us page
Merge branch 'master' of https://github.com/AppSomeHow/Ramadan

Conflicts:
	Ramadan/src/main/java/com/appsomehow/ramadan/utilities/UIUtils.java
SehriIfterTime Tab selector issue fixed

Signed-off-by: rayhan <hossain.rayhan@outlook.com>