[website] Add more tags for icon search

[jeeyun]

Adding more tags to icons for better search + minor fixes to routing issue in icons page.

[vmwclabot]

@jeeyun, you must sign every commit in this pull request acknowledging our Developer Certificate of Origin before your changes are merged. This can be done by adding Signed-off-by: John Doe <john.doe@email.org> to the last line of each Git commit message. The e-mail address used to sign must match the e-mail address of the Git author. Click here to view the Developer Certificate of Origin agreement.

• Commit c9f28d3 must be signed by jeeyun.lim@gmail.com

[vmwclabot]

@jeeyun, you must sign every commit in this pull request acknowledging our Developer Certificate of Origin before your changes are merged. This can be done by adding Signed-off-by: John Doe <john.doe@email.org> to the last line of each Git commit message. The e-mail address used to sign must match the e-mail address of the Git author. Click here to view the Developer Certificate of Origin agreement.

• Commit f8098e9 must be signed by gnomation@gnomeontherun.com

[gnomeontherun]

I'm not sure what happened but this isn't a clean commit so can you fix that up?

[vmwclabot]

@jeeyun, you must sign every commit in this pull request acknowledging our Developer Certificate of Origin before your changes are merged. This can be done by adding Signed-off-by: John Doe <john.doe@email.org> to the last line of each Git commit message. The e-mail address used to sign must match the e-mail address of the Git author. Click here to view the Developer Certificate of Origin agreement.

• Commit 2d77314 must be signed by gnomation@gnomeontherun.com

[vmwclabot]

@jeeyun, you must sign every commit in this pull request acknowledging our Developer Certificate of Origin before your changes are merged. This can be done by adding Signed-off-by: John Doe <john.doe@email.org> to the last line of each Git commit message. The e-mail address used to sign must match the e-mail address of the Git author. Click here to view the Developer Certificate of Origin agreement.

• Commit f19ad29 must be signed by gnomeontherun@users.noreply.github.com

[vmwclabot]

@jeeyun, you must sign every commit in this pull request acknowledging our Developer Certificate of Origin before your changes are merged. This can be done by adding Signed-off-by: John Doe <john.doe@email.org> to the last line of each Git commit message. The e-mail address used to sign must match the e-mail address of the Git author. Click here to view the Developer Certificate of Origin agreement.

• Commit f19ad29 must be signed by gnomeontherun@users.noreply.github.com