removed unnecessary console output
changed userdata schema
Poprawienie UserData na userData - byl blad przy uruchamianiu
populate.js:
	added paramater - number of companies
	it now clear companies collection before adding
Add function deleting all companies (need for populate.js).
Added function getAllWithLastChange
This closes #54.
Added price history and calculating price change. This close #51, #52 and #53.
Fixed problems with communication between Generator and Server
when data is fragmented.
And minor fixes.
minor fixes
small changes in userdata schema
Merge branch 'Kaluski' into Zarnowski
Added stock amount info in purchase view
changes in generator
merged
minor fix
small refactoring
Removed idea directory
merged Baszczyk - with fixes
Merge branch 'Uszycki' into Zarnowski
merge baszczyk - with fixes