change iteration number to a string
added a class for textareas with hints
Merge branch 'dev' into GUI
Added IterationEstimate class to calculate the total estimate of all the requirments in an iteration
Minor filtering for ID only implemented. GUI in place for future changes
initial work, not yet ready for use
Added a check in the validate method of the RequirmentsModelValidator
Makes sure the iteration being assaigned is not over yet
Updated validators for requirement fields and added call to validate function.
Also improved logic for setting which fields are editable at each stage.

Contributors:
	David Modica
able to make events
transaction log ready
fix #38
fix #38
fix #39
change estimated and actual effort to int
anomalous objectnotfound exception no longer thrown
Merge branch 'dev-feature-filters' into dev
Added filters capable of filtering based on any one column, added ability for future modifications via listener file, commented well
added user permissions model
Major Refactoring in GUI, added and removed scrollbars where needed,
made notes panel fit screen, still need to fix individual notes, crt req
doesn't break when resized ever now
Made some minor changes to the note panel. It now fills up the area, but wont shrink anymore