manage bookmarks, bugfixes

manage bookmarks, bugfixes

- bookmarks can now be attached to users, securities, organizations and
  figures. They show up as part of the smart-links on many pages.
- gem activerecord-mysql2-adapter not needed anymore
- named date_* columns consistently, generate time_* wrappers with meta
  programming
- enhanced Smr::Link with User, Portfolio, Bookmark and FigureVar
- have SecurityBond securities of type Convertible
- blog: pattern does match symbols and workdesk notes
- code cleanup: removed surrounding module defs and indent caused by them in
  many files
- code cleanup: simplified forms with *_for_form methods, dropped superflous
  :value assignments
- code cleanup: moved includable things to Smr::Extensions namespace
- usability: made Organizations searchable
- usability: remember selected Portfolio in session
- usability: improved time scaling in reports, very (and only) human readable
- usability: expose Dividend contribution in portraits
- usability: hover smr_menu to give visual aidb
- usability: pre-select Security in Quote form
- usability: better browse date selection (with chromium)
- BUGFIX: blog textsearch highlighting is case-sensitive
- BUGFIX: workdesk: do not show expired securities
- BUGFIX: fetch used old column names, improved debug output
- BUGFIX: date=0 means not specified - solved with Smr::TIME_ZERO
- BUGFIX: reaper - break out of loop when first quote found, removed extra
          module def
- BUGFIX: avoid duplication in Security names