Table rewritten to itterate over maps

Signed-off-by: Sergey Krivohatskiy <s.krivohatskiy@gmail.com>
Merge branch 'master' of https://github.com/SergeyKrivohatskiy/tiny_database

Conflicts:
	src/ru/spbau/tinydb/metainformation/MetaInformationTable.java
	src/ru/spbau/tinydb/table/Table.java
	src/ru/spbau/tinydb/tinyDatabase/TinyDatabase.java
	tests/ru/spbau/tinydb/bufferManager/MetaInfTest.java
	tests/ru/spbau/tinydb/bufferManager/TableTest.java

Signed-off-by: Sergey Krivohatskiy <s.krivohatskiy@gmail.com>