Version 1.10
Improve addWord button size and position and error bubble position
Hide delete button when the game start
Control space available before adding a word
Hide error bubble when the game starts
Assure word colors are unique
Resize the box when change the case

To resize the box containing the word, recreate them.
Now the alpha is set inside addRoundedLabel, making simpler the code.
Fix identify if is running in the xo

On Sugar, screen resolution is 1200x900, but at times
window.innerHeight is 901 instead of 900.
Not resize addWordsButton in Sugar

The background image is not resized
Adapt matrix cell size to the size of the matrix

The routine used to create the matrix with the list of words,
try to organize the words in a matrix with the requested size
(in our case 12 rows), but if can't do it, try enlarging the matrix.
This patch change the cell size looking at the generated matrix size.
Reset the locations list after every try

When wordfind can't organize all the words in the matrix,
enlarge the matrix and try again.
The code didn't cleaned the locations list after every try.
Avoid glitch in word selection in the matrix

In ocassions, the selecion started in a letter, and when the user moved
the finger, the start of the selection jumped to the next letter.
This patch fix the issue, by selecting the start cell in "mousedown" event.