replaces deprecated Tabula class method for debug
show error on failed request. (@mtigas @jeremybmerrill feel free to
change the wording on the error modal)
adjust error message
first take on 'repeat lasso'
ignore deleted pages
some stylin'
some indentin', reformattin' and optimizin'
cache extracted tables
remove 'repeat this selection' button if selection canceled
switch to Bootstrap Tour from Chaardin, fixes #112
Merge remote-tracking branch 'origin/intro'

Conflicts:
	webapp/tabula_debug.rb
don't use cache if debugging
use ObjectExtractor instead of TableGuesser to write tables.json
Merge remote-tracking branch 'origin/no_tableguesser' into extractor-new-methods

Conflicts:
	webapp/views/pdf_view.html.erb
things
Merge branch 'extractor-new-methods' into update_notification
update notif