fix for clearing non-numeric value always
Merge pull request #147 from PrimeRevenue/bug/spinner_clear_non_numeric_value_second_time

fix for clearing non-numeric value always
Collapsible section headers trigger content to fill the gap.
Also fix for tab headers appearing in grid column dropdown menu.
Merge pull request #148 from PrimeRevenue/bug/section_header_collapse

Collapsible section headers trigger content to fill the gap.
Grid overlay will be removed when the grid is destroyed.
added a new custom date format
Merge pull request #150 from PrimeRevenue/feature/custom_date_format

added a new custom date format
processing warnings after validations(only for date field)
warnings will be processed only if the input field has valid value(applied across all input fields), validators now have access to the whole view calling it so that any required properties from view can be used.
added warnings after validations change on the fields missed previously
updated qunit tests
Adding show() and hide() to tent.panel
removed duplicate call to exec custom warnings
Merge pull request #153 from PrimeRevenue/bug/warnings_after_validations

Bug/warnings after validations
Merge pull request #149 from PrimeRevenue/bug/section_header_collapse

Grid overlay will be removed when the grid is destroyed.
Merge pull request #152 from PrimeRevenue/feature/show_hide_methods_for_panels

Adding show() and hide() to tent.panel
Merge branch 'master' into feature/customized_collections