Image disappears when not taking a new photo

[TWiStErRob]

Report from Jozef

To reproduce:

• add new item
• fill in item name: test
• click question mark and make a photo
• now that the photo is taken click the photo again (as to indicate you changed your mind and want to make a new one)
• instead of making a new photo, go back
• tap save

Expected result:

• item is saved with the current photo (the first one made)

Actual result:

• toast message appears: "Cannot save.. java FileNotFoundException.."

It looks to me that the temporary image is removed before the new photo is actually saved.

[TWiStErRob]

Probably caused by #129

[TWiStErRob]

Same as described at https://github.com/TWiStErRob/net.twisterrob.inventory/blob/a19fb0b2e02be6b84a8ec3dc2997730da9a44e36/android/base/src/main/java/net/twisterrob/inventory/android/Constants.java#L88

[TWiStErRob]

Related https://github.com/TWiStErRob/net.twisterrob.inventory/issues/211