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
modules are case sensitive on Linux
updating capital after buying/selling
checking for valid values in sell & purchase views
select/deselect all (#41)
Added stock amount info in purchase view
changes in generator
merged
minor fix
small refactoring