Add numeric filter and modify filter editor view
Add reference field filter, date field filter, datetime field filter
Get items in reference filter editor
Commit reference type filter
add optionset filter
Merge remote-tracking branch 'origin/feature/filter' into feature/filter
Modify reference type filter and load exist filter way
modify filter page css
Merge remote-tracking branch 'origin/feature/filter' into feature/filter
Add validation for filter and modify the filter data way
add optionset filter
Merge remote-tracking branch 'origin/feature/filter' into feature/filter

Conflicts:
	src/Orchard.Web/Modules/Coevery.Core/Views/Content-List.cshtml
Refactor the options set type filter
Add filter description
fixed bug for the directive of optionset filter
Merge branch 'feature/filter' of https://github.com/Coevery/Coevery into feature/filter
Modify the filter description
Adjust the padding for filter
Merge branch 'feature/filter' into develop

Conflicts:
	src/Orchard.Web/Modules/Coevery.Core/Controllers/CommonController.cs
	src/Orchard.Web/Modules/Coevery.Core/Scripts/controllers/listcontroller.js
	src/Orchard.Web/Modules/Coevery.Projections/Coevery.Projections.csproj
Fix the merge conflicts