Adjust header to work on mobile. Closes #69

Added a breakpoint, using mobile first and adding a breakpoint for greater
than 600px. This adds a colored background for region so it overlaps the
other text gracefully. Makes title text smaller and removes top margin.
Moves search box down and slides other content down accordingly.
New Project: reveal.js (slides) as proposed in #66
Merge pull request #74 from yuwash/gh-pages

adding EtherCalc as discussed at #8
for slides:
data.json: name=slid.es instead of reveal.js, license and source set as suggested at https://github.com/libreprojects/libreprojects/pull/75#issuecomment-30303170
slides.png has margin of 48px each (160×160→256×256)
Add breakpoint for tablet sizes
New project: img.bi #8 #issuecomment-33021458
imgbi in category "tools" instead of "graphics"
imgbi italian intro
imgbi french intro
Merge pull request #1 from ironbishop/imgbi

some imgbi i10n
imgbi German introduction
slides logo scaled to unified format 128×128 in 160×160 canvas
fix Diaspora not showing in default favorites because of ID change
Merge pull request #71 from squareleaf/header_mobile_styling

Adjust header and search box to work on mobile. Closes #69
adjust mobile styles a bit
Merge pull request #75 from yuwash/revealjs

New Project: reveal.js (slides) as proposed in #66
Merge pull request #76 from yuwash/imgbi

New project: img.bi #8 #issuecomment-33021458
fix licenses not showing for some projects because they were not in array notation
Merge pull request #80 from libreprojects/fix-licenses

fix licenses not showing for some projects because they were not in array notation
+alphabetic order +identi.ca