[FIX]Fix the issue of page navigation when all records of current page are deleted, currently it does not go to previous page instead displays blank list, expected behavior: it should navigated to previous page when all records of the current page deleted.
[FIX]Refixed the issue of pager, does not navigate to previous page when all records of current page deleted.
[FIX]Web-Pager: Refixed the issue of Pager, there is inconsistency with pager, display of next page is impossible if records are deleted such that dataset size becomes less than or equals to limit, also if all records of current page is deleted then it does not navigate to previous page.
[MERGE] [FIX] view list: pagination problem when delete records in list view

When delete a record, correctly display the number of remaining items displayed (eg: 1-79 of 99)
When no more items in a page, force switch to previous page
When no more pager, reload the content to display potential items in next page
Update undescore.js to version 1.6 and underscore.string.js to version 2.3
[IMP] Upgrade underscore.js from version 1.3.1 to 1.6.0 and underscore.string.js from version 1.2.0 to 2.3.0