auto: increment master version to 15.0.78

fix(common): get handle caller buffer size small than internal Fixes …

fix(windows): #5336 appcontext get to handle small buffer

Co-authored-by: Marc Durdin <marc@durdin.net>

auto: increment master version to 15.0.77

fix(linux): Save QR code in temporary directory

refactor(linux): Centralize paths

 fix(linux): Fix restarting ibus when running with sudo 

feat(linux): Add reference index page 

feat(web): Merge keyboard stub with error stub

Co-authored-by: Joshua Horton <joshua_horton@sil.org>

refactor(android): setKeyboard and setKeymanLanguage

chore: keyboard_info.source.json 1.0.6

feat(android): hide textarea for perf

chore(android): Add help on Settings option to change spacebar caption

Relates to #5258.

Unnecessary layout recalc eliminated by hiding the backing
textarea with `display:none`. This improved performance by roughly
20%.

auto: increment master version to 15.0.76

Fixes #5310.

Introduce methods to get paths instead of hard-coding the values.
This also deprecates four methods (`user_keyman_dir`,
`user_keyman_font_dir`, `user_keyboard_dir`, and `get_isntall_area_path`).

This change also fixes a crash trying to install a package in the
shared area.

When installing in the shared area the user has to run
`km-package-install` with sudo so that he has sufficient permissions.
In that case we have to do extra work to restart ibus for the
logged-in user instead of root.

Fixes #5309.

Part of #4419.