Optimize Brewpi base page

[wfowlks]

After beers have been running for more than a day, the data that is collected becomes large and the browser has a hard time creating and displaying the graph.

I ran Google's PageSpeed plugin and the suggestion that was made was to optimize browser caching instead of having to load everything all at once.

Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
https://developers.google.com/speed/docs/insights/LeverageBrowserCaching#LeverageBrowserCaching

Suggestions for this page

Leverage browser caching for the following cacheable resources:
brewpi_logo.png (expiration not specified)
css/dygraph.css (expiration not specified)
ui-bg_glass_85_dfeffc_1x400.png (expiration not specified)
ui-bg_glass_95_fef1ec_1x400.png (expiration not specified)
ui-bg_gloss-wave_55_5c9ccc_500x100.png (expiration not specified)
ui-bg_inset-hard_100_f5f8f9_1x100.png (expiration not specified)
ui-bg_inset-hard_100_fcfdfd_1x100.png (expiration not specified)
ui-icons_469bdd_256x240.png (expiration not specified)
ui-icons_6da8d5_256x240.png (expiration not specified)
ui-icons_cd0a0a_256x240.png (expiration not specified)
jquery-ui-1.10.3.custom.css (expiration not specified)
css/style.css (expiration not specified)
font/5x8_lcd_hd44780u_a02-webfont.woff (expiration not specified)
js/beer-chart.js (expiration not specified)
js/control-panel.js (expiration not specified)
js/device-config.js (expiration not specified)
js/dygraph-combined.js (expiration not specified)
js/jquery-1.11.0.min.js (expiration not specified)
js/jquery-ui-1.10.3.custom.min.js (expiration not specified)
js/jquery-ui-timepicker-addon.js (expiration not specified)
js/main.js (expiration not specified)
js/maintenance-panel.js (expiration not specified)
js/profile-table.js (expiration not specified)
js/spin.js (expiration not specified)