Added toggle to collapse sidebar
Revert "Added toggle to collapse sidebar" due to old code in commit

This reverts commit 9440e432de91816b5c7d72ea4e12038f88e87bed.
Added toggle to collapse sidebar (without old code this time)
Use invisible formatting for clipboard copy-paste

When text is copied from browser it looks like "00:00 <nick> text."
Firefox adds new lines between records. It would be good to get rid of
it.
CSS for clipboard-aware chat modified to be backwards compatible
Hide elements used only for clipboard & removed unused selector
size portals by their level. Slightly modified patch by OshiHidra. Fixes #24, #29
fix #85
Merge pull request #84 from scrool/clipboard_friendly_chat

Use invisible formatting for clipboard copy-paste
don’t remove & re-render portals if nothing changed for them.
avoid rendering portal details for hidden portals. They do not get updated and thus outdated info might be shown.
probably fix #90
add hooks framework and add hook for portal added (fixes #87)
portal mods for unclaimed portals were missing border
Made toggle arrow longer & removed unneeded DOM manipulations
Added cmrn to contributors
add permalink feature
increase max size for portals, otherwise unclaimed ones are really hard to see
merged upstream changes
Merge pull request #81 from cmrn/collapsable-sidebar

Collapsable sidebar (patch by cmrn)