Make TableMatcher match exactly, not part of row

Reverts dbf3a7aaaf9d458f99e14983ca9db2d4cbe4b564.

The reverted commit tried to avoid a 30 second delay by using
have_selector. While that was successful in reducing test time, it made
the matcher find rows that where not exactly the wanted row, but contained
text of the wanted row. This wasn't a problem until we experimented with
Chrome as test browser returns text on select boxes.

This commit makes the matcher precise again. We still have to deal with
the 30 second delay.

spec/support/matchers/table_matchers.rb

@@ -2,19 +2,11 @@ RSpec::Matchers.define :have_table_row do |row|
 
   match do |node|
     @row = row
-
-    text_without_blanks = row.select(&:present?).join(" ").strip
-    return false unless node.has_selector? "tr", text: text_without_blanks # Check for appearance
-
     rows_under(node).include? row # Robust check of columns
   end
 
   match_when_negated do |node|
     @row = row
-
-    text_without_blanks = row.select(&:present?).join(" ").strip
-    return false unless node.has_no_selector? "tr", text: text_without_blanks # Check for appearance
-
     !rows_under(node).include? row # Robust check of columns
   end