add SampleViewController to project
add tableView category EHFormsCellPosition
Merge branch 'develop' into feature/UITableViewCellValidationStateStyles

Conflicts:
	EHForms.xcodeproj/project.pbxproj
use new tableView category EHFormsCellPosistion in SampleViewController
add EHFormFieldStyle and ColorMacro
Merge branch 'develop' into feature/UITableViewCellValidationStateStyles

Conflicts:
	EHFormsExample/AppDelegate.m
add theme styles to cells
Merge branch 'feature/ValidationStyles' into develop