[ENH] tablesorter: Prepare classes, zebra striping, etc for  bootstrap; Also try to fix ajax processing dimming.

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@51148 b456876b-0849-0410-b77d-98878d47e9d5
[FIX] bootstrap: Add table-striped and table-hover classes to tables which use tablesorter

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@51149 b456876b-0849-0410-b77d-98878d47e9d5
[NEW] tablesorter: add tablesorter.less file (let me know if this is the wrong location for this file) and import into darkroom.less file; delete legacy style sheet. To do: add to other bootstrapified themes, which will certainly result in further fixes. Tablesorter in bootstrap default is also a little messed up now (not sure how to incorporate this less file into the default theme?).

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@51150 b456876b-0849-0410-b77d-98878d47e9d5