fixed multiline code rendering
properly handle eqnarray
center multiline formula image
added varphi rendering
added thickapprox rendering
ipython notebook: replace links in markdown cell with clickable links
added alert-succes and alert-error rules
do not break markdown links
replace headers in markdown
parse eqnarray independent of mode
fixed layout
added snuggletex library dependencies
Merge remote-tracking branch 'origin/master'
ipython notebook buttons into groups
update cell selection rectangle on enter
added tooltips for ipython notebook buttons
IDEA-115799 diff: fix changes painting over scrollbar in 3-way panel

do not eat 100% of CPU due to recursive calls of repaint() (it was not lead to deadlock, so was not fixed all this time).
diff: better painting of changes over scrollbar in three-way diff panel

* we don't need to care about thumb size, as now we are painting between background and thumb, not over them
* we don't need to explicitly paint changes on paint(), as they will be painted by scrollbar
diff: draw applied changes on scrollbar
platform: uniform name check