First N4 update and more sensible ordering

From this update on, first time users will be sent to the settings menu, where the default first date will be the date they first entered the game. 

I've reorganized the first 19 days to put the easiest words in N5 first, so if you've already started before this update, be sure to remember how far you've gone so you can skip accordingly when you get to what were the first days. 

In addition there's now a message that pops up if you try to access ads without internet connection.

I also added 11 days worth of words(so now you have 30 instead of 19)

still trying to get the hang of the daily notifications. sometimes it works perfectly, sometimes it doesn't work all, and sometimes there're too many of them.

Current list of topic based days is:

N5(1-19):

• colors(only part of the vocab for this day) - 1
• family - 2
• counters - day 9
• counters for days/days of the month - day 10
• a few more counters and days of the month - day 11

N4(20 - current end at 30):

• meeting based words(half of day) - 20