ctrl-c or ctrl-x inside a table copies or cuts the selected text.

When the key commands ctrl-c (copy) or ctrl-x(cut) are pressed the whole table was selected. This is due to a feature that set the selection to the whole block when copying or cutting via key commands. With this fix, the selection of the whole block is only done if the block is not a table.
Merge pull request #1122 from najor/hotfix-rt57860-strg-x-tabellen

ctrl-c or ctrl-x inside a table copies or cuts the selected text.