changed SEARCH icon to magnifying glass

[shijudaniel]

Fixes #.

Changes in this pull request:

• main.scala.html
• recordSets.scala.html

I changed list icon to a magnifying glass:

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[codecov]

Codecov Report

Merging #948 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #948   +/-   ##
=======================================
  Coverage   95.31%   95.31%           
=======================================
  Files         160      160           
  Lines        7144     7144           
  Branches      159      159           
=======================================
  Hits         6809     6809           
  Misses        335      335           

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