Preview panel clearing + selecting first tab

lets see if this works LOL
Merge pull request #23 from noilek/develop

Add ability to semantic tag things in posts
Preview panel clearing
Merge pull request #25 from DodoVT/develop

Preview panel now automatically clears when submitting a reply.  Fixes #12
Make push notification server configurable

Include tips for setting up live update in the config file.
Convert to proper comment character in ini file
Suggest using push_channel_group with nhpm
Merge pull request #30 from eve-val/develop-push-notif-config

Make push notification server configurable (kind of fixes #29)
Merge pull request #32 from eve-val/develop-push-notif-config

INI tweaks; work on #29
Hilight unread threads and forums (addresses #22)

I'm not sure this covers everything the initial submitter wanted, but it
goes a long way.
Implement spoiler tags
remove debug prints (oops)
Merge pull request #33 from eve-val/feature/unread-indicators

Hilight unread threads and forums (addresses #22)
Use fontawesome icons instead of '+' and '-'
Merge pull request #35 from eve-val/feature/spoiler-tags

Implement spoiler tags (fixes #31)
Invert the polarity on spoilers +/- button

I am a chump.
Style unread threads in dark themes
convert rgba with alpha 1 to hex value
Merge pull request #39 from eve-val/feature/spoiler-tags

Invert the polarity on spoilers +/- button
Handle 0-threads case in is_forum_read (fixes #40)

This fix both the problem that empty forums show as unread, and the
error after marking an empty forum as read.