Add number of play in Flip activity

[FreddieN]

Fixes #216
There is now a turn counter in the flip activity, similar to the generation count in the Game of Life activity. There is also a coloured skill indicator to let the player know how well they are doing. See below:

Let me know if any issues :)

[llaske]

Nice start. Few remarks:

• The "Turn" string should be localized, you need to include localization (see https://github.com/llaske/sugarizer/blob/dev/docs/tutorial_step5.md)
• The "Turn" string is not responsive: its size should depend of the window size
• The counter is not stored in the datastore so it restart to 1 when the activity is relaunched from the Journal
• Good idea to change line color depending of number of turn. BTW it should be also dependent of board size: it's easier to flip all board if size is smaller

[FreddieN]

Turn string is now localized:

It is also now responsive to suit the screen height. The counter is also stored in the datastore so when opening from the journal the user's session is restored. I've adjusted the indicator to adjust to the board's difficulty.
Let me know if you want anything else changed.

[llaske]

It's better.
BTW there is still two issues:

• The line color is green when the game is restored from the Journal, whatever number is,
• When reloaded from Journal the board size is changed (it's smaller) and not optimal.

[FreddieN]

I have fixed the issue with the green indicator, I am unable to replicate the issue with the board size being smaller? Could you send a screenshot replicating the issue?

[FreddieN]

I think you might have meant this button:

I have now updated the game to store this in the journal.

[llaske]

It works now. Great job.