Speed up site by caching page assets

## Optional caching improvements
## Requires mod_header and mod_deflate to be enabled within Apache
##################
<IfModule mod_headers.c>
  Header unset Pragma
  FileETag None
  Header unset ETag
  <FilesMatch ".*\.(ico|jpe?g|JPE?G|gif|GIF|webp|png|swf|flv)$">
    Header set Cache-control "max-age=864000, public, must-revalidate"
    Header unset Last-Modified
  </FilesMatch>
  <FilesMatch ".*\.(html|htm|xml|txt|xsl)$">
    Header set Cache-control "max-age=7200, must-revalidate"
  </FilesMatch>
</IfModule>
<IfModule mod_deflate.c>
  <FilesMatch "\.(js|css)$">
    SetOutputFilter DEFLATE
  </FilesMatch>
</IfModule>

##################
## Optional improvements
## Requires mod_expires to be enabled within Apache
##################
<ifmodule mod_expires.c>
  ExpiresActive On
  ExpiresDefault A300
  ExpiresByType application/x-javascript A3600
  ExpiresByType text/css A3600
  ExpiresByType image/gif A604800
  ExpiresByType video/x-flv A604800
  ExpiresByType application/pdf A604800
  ExpiresByType text/html A300
  ExpiresByType image/x-icon A86400
  ExpiresByType image/jpeg A2592000 
  ExpiresByType image/png A2592000 
</ifmodule>