Fix MdTable.vue numberOfRows bug

[pablohpsilva]

Bug

It happened when I removed one or more rows from the table and clicked on the "select all" checkbox. The number shown was the original data array size, not the new one (after deleting some itens). Example:

nutrition = [1,2,3,4,5];
numberOfRows = 5;

nutrition.splice(1,1);

nutrition = [1,3,4,5];
numberOfRows = 5; // this is the bug. it should be 4, not 5.

Fix

File: mdTable.vue

  watch: {
    data() {
      this.numberOfRows = this.data.length;
    }
  },

This will guarantee the numberOfRows is always up to date.

[marcosmoura]

Cool. Sounds good! Merged!