Release/1.46

[KirillMakarov]

• streak notifications are not disabled longer
• remove joda time. New way of working with time (DateTimeHelper)
• new material progress dialog
• download video with .mp4 extension (Sometimes files were not visible for user in the app, because meizu m2 mini added .bin extension to files, when it had been downloaded without extension)
• DownloadCompleteReceiver uses goAsync(), when data is written to database
• check requirement_satisfied for opening sections
• Code quiz improvements (jump over paired elements, remove end element, when start element is removed)
• improve downloading publishing process (rewrite it to RxJava 2, reduce memory consumption)
• remove filters for enrolled courses
• show new popup dialog, when user has enrolled on course
• update retrofit to 2.3
• avoid using of kotlinx in viewholder, because it call findViewById in onBind method
• change icons for shortcut and fix behaviour (Android 7.1+)
• fix crashes in code quiz, when step is not ready
• fix enroll and drop bugs in course carousel/continue learning
• change course widgets to new mock ups
• increase text size in toolbar
• change fonts on main screen